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Platelet

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2356: 2878: 1431: 506: 1733:(Platelet Function Assay — 100) is a system for analysing platelet function in which citrated whole blood is aspirated through a disposable cartridge containing an aperture within a membrane coated with either collagen and epinephrine or collagen and ADP. These agonists induce platelet adhesion, activation and aggregation, leading to rapid occlusion of the aperture and cessation of blood flow termed the closure time (CT). An elevated CT with EPI and collagen can indicate intrinsic defects such as 257: 532: 2322:" layer, which includes the platelets and the white blood cells. The "buffy coat" is isolated in a sterile bag, suspended in a small amount of red blood cells and plasma, then centrifuged again to separate the platelets and plasma from the red and white blood cells. Regardless of the initial method of preparation, multiple donations may be combined into one container using a sterile connection device to manufacture a single product with the desired therapeutic dose. 606: 675: 2292: 909: 566: 1021:, the most sensitive sign of activation, when exposed to platelets using ADP, are morphological changes. Mitochondrial hyperpolarization is a key event in initiating morphology changes. Intraplatelet calcium concentration increases, stimulating the interplay between the microtubule/actin filament complex. The continuous changes in shape from the unactivated to the fully activated platelet are best seen via 47: 1098: 1205:, while platelets facilitate neutrophils' NETosis. NETs bind tissue factor, binding the coagulation centers to the location of infection. They also activate the intrinsic coagulation pathway by providing its negatively charged surface to the factor XII. Other neutrophil secretions, such as proteolytic enzymes which cleave coagulation inhibitors, also bolster the process. 1741:, or circulating platelet inhibitors. A follow-up test involving collagen and ADP is used to indicate if the abnormal CT with collagen and EPI was caused by the effects of acetyl sulfosalicylic acid (aspirin) or medications containing inhibitors. The PFA-100 is highly sensitive to von Willebrand disease, but is only moderately sensitive to defects in platelet function. 1193:. The process is initiated either by immune cells by activating their pattern recognition receptors (PRRs), or by platelet-bacterial binding. Platelets can bind to bacteria either directly through thrombocytic PRRs and bacterial surface proteins, or via plasma proteins that bind both to platelets and bacteria. Monocytes respond to bacterial 2303:: blood is taken from the donor, passed through a device which removes the platelets, and the remainder is returned to the donor in a closed loop. The industry standard is for platelets to be tested for bacteria before transfusion to avoid septic reactions, which can be fatal. Recently the AABB Industry Standards for 1117:. Each platelet has around 60,000 of these receptors. When any one or more of at least nine different platelet surface receptors are turned on during activation, intraplatelet signaling pathways cause existing GpIIb/IIIa receptors to change shape — curled to straight — and thus become capable of binding. 2104:-1 (COX1), and hence normal hemostasis. The resulting platelets are unable to produce new cyclooxygenase because they have no DNA. Normal platelet function does not return until the use of aspirin has ceased and enough of the affected platelets have been replaced by new ones, which can take over a week. 2395:
Platelets, either apheresis-derived or random-donor, can be processed through a volume reduction process. In this process, the platelets are spun in a centrifuge and plasma is removed, leaving 10 to 100 mL of platelet concentrate. Such volume-reduced platelets are normally transfused only to neonatal
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was developed as a test of platelet function by Duke in 1910. Duke's test measured the time taken for bleeding to stop from a standardized wound in the ear lobe that was blotted every 30 seconds, considering less than 3 minutes as normal. Bleeding time has low sensitivity and specificity for mild to
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Platelets do not need to belong to the same A-B-O blood group as the recipient or be cross-matched to ensure immune compatibility between donor and recipient unless they contain a significant amount of red blood cells (RBCs). The presence of RBCs imparts a reddish-orange color to the product and is
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can reduce the infectious load of pathogens contained in donated blood products. Another photochemical treatment process utilizing amotosalen and UVA light has been developed for the inactivation of viruses, bacteria, parasites, and leukocytes. In addition, apheresis platelets tend to contain fewer
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Bleeding due to a platelet disorder or a coagulation factor disorder can be distinguished by the characteristics and location of the bleeding. Platelet bleeding involves bleeding from a cut is prompt and excessive, but can be controlled by pressure; spontaneous bleeding into the skin which causes a
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Although thrombosis, blood coagulation in intact blood vessels, is usually viewed as a pathological immune response, leading to obturation of lumen of blood vessel and subsequent hypoxic tissue damage, in some cases, directed thrombosis, called immunothrombosis, can locally control the spread of an
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These changes are all brought about by the interaction of the microtubule/actin complex with the platelet cell membrane and open canalicular system (OCS), which is an extension and invagination of that membrane. This complex runs just beneath these membranes and is the chemical motor that pulls the
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Spontaneous and excessive bleeding can occur because of platelet disorders. This bleeding can be caused by deficient numbers of platelets, dysfunctional platelets, or platelet densities over 1 million/microliter. (The excessive numbers create a relative von Willebrand factor deficiency due to
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As hemostasis is a basic function of thrombocytes in mammals, it also has its uses in possible infection confinement. In case of injury, platelets, together with the coagulation cascade, provide the first line of defense by forming a blood clot. Hemostasis and host defense were thus intertwined in
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Gaertner F, Ahmad Z, Rosenberger G, Fan S, Nicolai L, Busch B, Yavuz G, Luckner M, Ishikawa-Ankerhold H, Hennel R, Benechet A, Lorenz M, Chandraratne S, Schubert I, Helmer S, Striednig B, Stark K, Janko M, Böttcher RT, Verschoor A, Leon C, Gachet C, Gudermann T, Mederos Y, Schnitzler M, Pincus Z,
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Apheresis platelets are collected using a mechanical device that draws blood from the donor and centrifuges the collected blood to separate out the platelets and other components to be collected. The remaining blood is returned to the donor. The advantage to this method is that a single donation
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Mammalian platelets lacking nucleus are able to conduct autonomous locomotion. Platelets are active scavengers, scaling walls of blood vessels and reorganising the thrombus. They are able to recognize and adhere to many surfaces, including bacteria, and can envelop them in their open canalicular
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The change in the recipient's platelet count after transfusion is termed the "increment" and is calculated by subtracting the pre-transfusion platelet count from the post-transfusion count. Many factors affect the increment including body size, the number of platelets transfused, and clinical
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Platelets are stored under constant agitation at 20–24 °C (68–75 °F). Units cannot be refrigerated as this causes platelets to change shape and lose function. Storage at room temperature provides an environment where any introduced bacteria may proliferate and subsequently cause
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Since fibrinogen is a rod-like protein with nodules on either end capable of binding GPIIb/IIIa, activated platelets with exposed GPIIb/IIIa can bind fibrinogen to aggregate. GPIIb/IIIa may also further anchor the platelets to subendothelial vWF for additional structural stabilisation.
264:, denoted by letter L, signal for platelets (P) to migrate towards the wound (Site A). As more platelets gather around the opening, they produce more ligands to amplify the response. The platelets congregate around the wound in order to create a cap to stop blood flow out of the tissue. 1426:
Platelet concentrations vary between individuals and over time, with the population average between 250,000 and 260,000 cells per mm (equivalent to per microliter), but the typical laboratory accepted normal range is between 150,000 and 400,000 cells per mm or 150–400 × 10 per liter.
1217:. DIC in sepsis is a prime example of both the dysregulated coagulation process as well as an undue systemic inflammatory response, resulting in a multitude of microthrombi of similar composition to that in physiological immunothrombosis — fibrin, platelets, neutrophils and NETs. 842:
within the platelet, overcoming the baseline calcium efflux. Families of three G proteins (Gq, Gi, G12) operate together for full activation. Thrombin also promotes secondary fibrin-reinforcement of the platelet plug. Platelet activation in turn degranulates and releases
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meaning low platelets). The term thrombocytes are proper for mononuclear cells found in the blood of non-mammalian vertebrates: they are the functional equivalent of platelets, but circulate as intact cells rather than cytoplasmic fragments of bone marrow megakaryocytes.
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and pediatric patients when a large volume of plasma could overload the child's small circulatory system. The lower volume of plasma also reduces the chances of an adverse transfusion reaction to plasma proteins. Volume reduced platelets have a shelf life of four hours.
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Whole blood impedance aggregometry (WBA) measures the change in electrical impedance between two electrodes when platelet aggregation is induced by an agonist. Whole blood lumiaggregometry may increase the test sensitivity to impairment of platelet granule secretion.
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The blood clot is only a temporary solution to stop bleeding; tissue repair is needed. Small interruptions in the endothelium are handled by physiological mechanisms; large interruptions by a trauma surgeon. The fibrin is slowly dissolved by the fibrinolytic enzyme,
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provides at least one therapeutic dose, as opposed to the multiple donations for whole-blood platelets. This means that a recipient is exposed to fewer donors and has less risk of transfusion-transmitted disease and other complications. Sometimes a person such as a
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Harker LA, Roskos LK, Marzec UM, Carter RA, Cherry JK, Sundell B, Cheung EN, Terry D, Sheridan W (April 2000). "Effects of megakaryocyte growth and development factor on platelet production, platelet life span, and platelet function in healthy human volunteers".
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The fundamental function of platelets is to clump together to stop acute bleeding. This process is complex, as more than 193 proteins and 301 interactions are involved in platelet dynamics. Despite much overlap, platelet function can be modeled in three steps:
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Provan D, Arnold DM, Bussel JB, Chong BH, Cooper N, Gernsheimer T, Ghanima W, Godeau B, González-López TJ, Grainger J, Hou M, Kruse C, McDonald V, Michel M, Newland AC, Pavord S, Rodeghiero F, Scully M, Tomiyama Y, Wong RS, Zaja F, Kuter DJ (November 2019).
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is most frequently used to correct unusually low platelet counts, either to prevent spontaneous bleeding (typically at counts below 10×10/L) or in anticipation of medical procedures that necessarily involve some bleeding. For example, in patients undergoing
2318:(PRP) is removed from the red cells, then centrifuged at a faster setting to harvest the platelets from the plasma. In other regions of the world, the unit of whole blood is centrifuged using settings that cause the platelets to become suspended in the " 3926:
O'Halloran AM, Curtin R, O'Connor F, Dooley M, Fitzgerald A, O'Brien JK, Fitzgerald DJ, Shields DC (February 2006). "The impact of genetic variation in the region of the GPIIIa gene, on Pl expression bias and GPIIb/IIIa receptor density in platelets".
1480:, anticoagulated whole blood is mixed with saline and a platelet agonist in a single-use cuvette with two pairs of electrodes. The increase in impedance between the electrodes as platelets aggregate onto them, is measured and visualized as a curve. 1057:. The entire OCS thus becomes indistinguishable from the initial platelet membrane as it forms the "fried egg". This dramatic increase in surface area comes about with neither stretching nor adding phospholipids to the platelet membrane. 2343:
Platelets collected by either method have a typical shelf life of five days. This results in supply shortages, as testing donations often requires up to a full day. No effective preservative solutions have been devised for platelets.
1287:(OCS) rather than phagocytosis, as OCS is merely an invagination of outer plasma membrane. These platelet-bacteria bundles provide an interaction platform for neutrophils that destroy bacteria using the NETosis and phagocytosis. 306:
deposition and linking (secondary hemostasis). These processes may overlap: the spectrum is from a predominantly platelet plug, or "white clot" to a predominantly fibrin, or "red clot" or the more typical mixture. Berridge adds
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Classically it was thought that this was the only mechanism involved in aggregation, but three other mechanisms have been identified which can initiate aggregation, depending on the velocity of blood flow (i.e. shear range).
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Perez-Pujol S, Tonda R, Lozano M, Fuste B, Lopez-Vilchez I, Galan AM, Li J, Goodrich R, Escolar G (June 2005). "Effects of a new pathogen-reduction technology (Mirasol PRT) on functional aspects of platelet concentrates".
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In case of imbalance throughout the regulation of immunothrombosis, this process can become aberrant. Regulatory defects in immunothrombosis are suspected to be a major factor in pathological thrombosis in forms such as
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Lefrançais, Emma; Ortiz-Muñoz, Guadalupe; Caudrillier, Axelle; Mallavia, Beñat; Liu, Fengchun; Sayah, David M.; Thornton, Emily E.; Headley, Mark B.; David, Tovo; Coughlin, Shaun R.; Krummel, Matthew F. (April 2017).
493:, with a semiaxis ratio of 2 to 8. This approximation can be used to model the hydrodynamic and optical properties of a population, as well as to restore the geometric parameters of individual measured platelets by 4553:
Murakawa M, Okamura T, Tsutsumi K, Tanoguchi S, Kamura T, Shibuya T, Harada M, Niho Y (1992). "Acquired von Willebrand's disease in association with essential thrombocythemia: regression following treatment".
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In addition to interacting with vWF and fibrin, platelets interact with thrombin, Factors X, Va, VIIa, XI, IX, and prothrombin to complete formation via the coagulation cascade. Human platelets do not express
344:(clot cell) came into use in the early 1900s and is sometimes used as a synonym for platelet; but not generally in the scientific literature, except as a root word for other terms related to platelets (e.g. 4753:
Mehic D, Assinger A, Gebhart J. Utility of Global Hemostatic Assays in Patients with Bleeding Disorders of Unknown Cause. Hamostaseologie. 2024 Jul 1. doi: 10.1055/a-2330-9112. Epub ahead of print. PMID
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proteins, ADP reduces platelet adenylate cyclase activity and cAMP production, leading to accumulation of calcium inside the platelet by inactivating the cAMP calcium efflux pump. The other ADP-receptor
497:. More accurate biophysical models of platelet surface morphology that model its shape from first principles, make it possible to obtain a more realistic platelet geometry in a calm and activated state. 1137:, initiating and participating in multiple inflammatory processes, directly binding and even destroying pathogens. Clinical data show that many patients with serious bacterial or viral infections have 1593: 812:
receptor and integrin α2β1) on the platelet. GPVI is associated with the Fc receptor gamma chain and leads via the activation of a tyrosine kinase cascade finally to the activation of PLC-gamma2 (
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Ruane PH, Edrich R, Gampp D, Keil SD, Leonard RL, Goodrich RP (June 2004). "Photochemical inactivation of selected viruses and bacteria in platelet concentrates using riboflavin and light".
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are avoided for levels below 80×10/L. Platelets may also be transfused when the platelet count is normal but the platelets are dysfunctional, such as when an individual is taking aspirin or
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Circulating inactivated platelets are biconvex discoid (lens-shaped) structures, 2–3 μm in greatest diameter. Activated platelets have cell membrane projections covering their surface.
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Machlus KR, Thon JN, Italiano JE (April 2014). "Interpreting the developmental dance of the megakaryocyte: a review of the cellular and molecular processes mediating platelet formation".
2112:, does not have such a long duration effect, with platelet function usually returning within 24 hours, and taking ibuprofen before aspirin prevents the irreversible effects of aspirin. 1712:. Unaggregated plasma allows relatively little light to pass through. After adding an agonist, the platelets aggregate, increasing light transmission, which is detected by a photocell. 2504:
in 1865 described what he called "spherules", which he noted were much smaller than red blood cells, occasionally clumped, and were sometimes found in collections of fibrin material.
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Marcus AJ, Broekman MJ, Drosopoulos JH, Olson KE, Islam N, Pinsky DJ, Levi R (April 2005). "Role of CD39 (NTPDase-1) in thromboregulation, cerebroprotection, and cardioprotection".
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Borhany, Munira; Pahore, Zaen; ul Qadr, Zeeshan; Rehan, Muhammad; Naz, Arshi; Khan, Asif; Ansari, Saqib; Farzana, Tasneem; Nadeem, Muhammad; Raza, Syed Amir; Shamsi, Tahir (2010).
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Lancet, 1882, ii. 916; Notes of Gulliver's Researches in Anatomy, Physiology, Pathology, and Botany, 1880; Carpenter's Physiology, ed. Power, 9th ed., see Index under 'Gulliver.'
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invaginated OCS out of the interior of the platelet, like turning pants pockets inside out, creating the dendrites. This process is similar to the mechanism of contraction in a
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The platelet cell membrane has receptors for collagen. Following rupture of the blood vessel wall, platelets are exposed and adhere to the collagen in the surrounding tissue.
276:. They gather at the site and, unless the interruption is physically too large, they plug the hole. First, platelets attach to substances outside the interrupted endothelium: 2330:
patient who requires routine transfusions of platelets receives repeated donations from a specific donor to minimize risk. Pathogen reduction of platelets using for example,
924:. Activated platelets secrete the contents of these granules through their canalicular systems to the exterior. Bound and activated platelets degranulate to release platelet 540:
The average life span of circulating platelets is 8 to 9 days. Life span of individual platelets is controlled by the internal apoptotic regulating pathway, which has a Bcl-x
851:, potentiating the coagulation cascade. Platelet plugging and coagulation occur simultaneously, with each inducing the other to form the final fibrin-crosslinked thrombus. 777:(IP3) generation and intracellular release of more calcium. This together induces platelet activation. Endothelial ADPase degrades ADP and prevents this from happening. 5951:
Schmaier AA, Stalker TJ, Runge JJ, Lee D, Nagaswami C, Mericko P, Chen M, Cliché S, Gariépy C, Brass LF, Hammer DA, Weisel JW, Rosenthal K, Kahn ML (September 2011).
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features that may cause premature destruction of the transfused platelets. When recipients fail to demonstrate an adequate post-transfusion increment, this is termed
1037:. The surface of the unactivated platelet looks similar to the surface of the brain–a wrinkled appearance from numerous shallow folds that increase the surface area; 7828: 6399: 1081:
complexes, two of the sites of interplay between platelets and the coagulation cascade. Calcium ions are essential for the binding of these coagulation factors.
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Pooled whole-blood platelets, sometimes called "random" platelets, are separated by one of two methods. In the US, a unit of whole blood is placed into a large
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on the platelet surface (hence the so-called "out-in" mechanism), and those of other platelets. These receptors trigger intraplatelet signaling, which converts
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activity and increases the production of cAMP, further promoting the efflux of calcium and reducing intracellular calcium availability for platelet activation.
7873: 1784:: the formation of a clot within an intact vessel. This type of thrombosis arises by mechanisms different from those of a normal clot: extending the fibrin of 132: 2870: 1383:; bleeding into mucous membranes causing bleeding gums, nose bleed, and gastrointestinal bleeding; menorrhagia; and intraretinal and intracranial bleeding. 4306:
Oehlers, Stefan H.; Tobin, David M.; Britton, Warwick J.; Shavit, Jordan A.; Nguyen, Tuong; Johansen, Matt D.; Johnson, Khelsey E.; Hortle, Elinor (2019).
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Normal platelets can respond to an abnormality on the vessel wall rather than to hemorrhage, resulting in inappropriate platelet adhesion/activation and
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Belamarich FA, Shepro D, Kien M (November 1968). "ADP is not involved in thrombin-induced aggregation of thrombocytes of a non-mammalian vertebrate".
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Boilard E, Nigrovic PA, Larabee K, Watts GF, Coblyn JS, Weinblatt ME, Massarotti EM, Remold-O'Donnell E, Farndale RW, Ware J, Lee DM (January 2010).
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Mason KD, Carpinelli MR, Fletcher JI, Collinge JE, Hilton AA, Ellis S, Kelly PN, Ekert PG, Metcalf D, Roberts AW, Huang DC, Kile BT (March 2007).
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Diacovo TG, Puri KD, Warnock RA, Springer TA, von Andrian UH (July 1996). "Platelet-mediated lymphocyte delivery to high endothelial venules".
1446:, platelets appear as dark purple spots, about 20% of the diameter of red blood cells. The smear reveals size, shape, qualitative number, and 3413:
Palmer RM, Ferrige AG, Moncada S (1987). "Nitric oxide release accounts for the biological activity of endothelium-derived relaxing factor".
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Jones CI, Barrett NE, Moraes LA, Gibbins JM, Jackson DE (2012). "Endogenous inhibitory mechanisms and the regulation of platelet function".
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and Transfusion Services (5.1.5.1) has allowed use of pathogen reduction technology as an alternative to bacterial screenings in platelets.
6392: 7710: 7380: 6906: 6519: 5953:"Occlusive thrombi arise in mammals but not birds in response to arterial injury: evolutionary insight into human cardiovascular disease" 527:
Reserve platelets are stored in the spleen and are released when needed by splenic contraction induced by the sympathetic nervous system.
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van Genderen PJ, Leenknegt H, Michiels JJ, Budde U (September 1996). "Acquired von Willebrand disease in myeloproliferative disorders".
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Platelets modulate neutrophils by forming platelet-leukocyte aggregates (PLAs). These formations induce upregulated production of αmβ2 (
7720: 7593: 1314:. Inflammatory damage to the surrounding extracellular matrix continuously reveals more collagen, maintaining microvesicle production. 3885:
Tyagi T, Ahmad S, Gupta N, Sahu A, Ahmad Y, Nair V, Chatterjee T, Bajaj N, Sengupta S, Ganju L, Singh SB, Ashraf MZ (February 2014).
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Moskalensky AE, Yurkin MA, Konokhova AI, Strokotov DI, Nekrasov VM, Chernyshev AV, Tsvetovskaya GA, Chikova ED, Maltsev VP (2013).
6385: 3972:"Platelet vitronectin receptor expression differentiates Iraqi-Jewish from Arab patients with Glanzmann thrombasthenia in Israel" 3697:"Mitochondria regulate platelet metamorphosis induced by opsonized zymosan A — activation and long-term commitment to cell death" 2004: 360:, regardless of its composition (white, red, or mixed). In other contexts it is used to contrast a normal from an abnormal clot: 368:
arises from a pathologic and excessive quantity of clot. In a third context it is used to contrast the result from the process:
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Cecerska-Heryć E, Goszka M, Dołęgowska B (2022). "Applications of the regenerative capacity of platelets in modern medicine".
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Platelets rapidly deploy to sites of injury or infection, and potentially modulate inflammatory processes by interacting with
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McMorran BJ, Wieczorski L, Drysdale KE, Chan JA, Huang HM, Smith C, Mitiku C, Beeson JG, Burgio G, Foote SJ (December 2012).
4074: 3481: 2758: 2093: 1872: 1194: 1141:, thus reducing their contribution to inflammation. Platelet-leukocyte aggregates (PLAs) found in circulation are typical in 663: 4257:
Iannacone M, Sitia G, Isogawa M, Marchese P, Castro MG, Lowenstein PR, Chisari FV, Ruggeri ZM, Guidotti LG (November 2005).
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Gaertner F, Massberg S (December 2016). "Blood coagulation in immunothrombosis-At the frontline of intravascular immunity".
7731: 7249: 5168:"Cysteinyl leukotriene overproduction in aspirin-exacerbated respiratory disease is driven by platelet-adherent leukocytes" 2092:
Some drugs used to treat inflammation have the unwanted side effect of suppressing normal platelet function. These are the
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Platelets are either isolated from collected units of whole blood and pooled to make a therapeutic dose, or collected by
2272: 1994: 1857: 1198: 7465: 6981: 2451: 1248:) integrin in neutrophils. Interaction with PLAs also induces degranulation and increased phagocytosis in neutrophils. 2267:, in which the three major blood components (red blood cells, plasma, and platelets) are transfused to address severe 7748: 7375: 7297: 7292: 1350:, killing the bacteria directly. Platelets also secrete proinflammatory and procoagulant mediators such as inorganic 1065:
Platelet activation causes its membrane surface to become negatively charged. One of the signaling pathways turns on
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Matarrese P, Straface E, Palumbo G, Anselmi M, Gambardella L, Ascione B, Del Principe D, Malorni W (February 2009).
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in morphology. They aggregate in response to thrombin, but not to ADP, serotonin, nor adrenaline, as platelets do.
2352:. The United States requires products to be tested for the presence of bacterial contamination before transfusion. 1949: 1876: 1658: 139: 1434:
On for example optical densitometry, a first and second wave of platelet aggregation is seen, in this case for an
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of the endothelial cells and secreted constitutively into the blood. Platelets store vWF in their alpha granules.
7254: 7090: 5404:"The risk of spinal haematoma following neuraxial anaesthesia or lumbar puncture in thrombocytopenic individuals" 1477: 1471: 729:-activated calcium pump. Intracellular calcium concentration determines platelet activation status, as it is the 477:
synthesis. This dense tubular system is connected to the surface platelet membrane to aid thromboxane A2 release.
7080: 1753:, and is due to either decreased production or increased destruction. Elevated platelet concentration is called 7030: 5479:"Updated international consensus report on the investigation and management of primary immune thrombocytopenia" 5166:
Laidlaw TM, Kidder MS, Bhattacharyya N, Xing W, Shen S, Milne GL, Castells MC, Chhay H, Boyce JA (April 2012).
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contaminating red blood cells because the collection method is more efficient than "soft spin" centrifugation.
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Favaloro EJ, Pasalic L, Lippi G (April 2023). "Towards 50 years of platelet function analyser (PFA) testing".
3887:"Altered expression of platelet proteins and calpain activity mediate hypoxia-induced prothrombotic phenotype" 2314:
in what is referred to as a "soft spin". At these settings, the platelets remain suspended in the plasma. The
8018: 7533: 7458: 7330: 6974: 2501: 2283:(ITP), because the transfused platelets are immediately cleared; however, it is indicated to treat bleeding. 1959: 1933: 1867: 1623: 793: 188: 127: 4968: 4090: 1420: 1201:(DAMPs) by activating the extrinsic pathway of coagulation. Neutrophils facilitate the blood coagulation by 7783: 7637: 7282: 7135: 6789: 6597: 2486:. This microscope improved resolution sufficiently to make it possible to see platelets for the first time. 2443: 2264: 1964: 1920: 1598: 1386:
Excessive numbers of platelets, and/or normal platelets responding to abnormal vessel walls, can result in
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When the endothelial layer is disrupted, collagen and VWF anchor platelets to the subendothelium. Platelet
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McGlasson DL, Fritsma GA (March 2009). "Whole blood platelet aggregometry and platelet function testing".
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Ahmad SS, Rawala-Sheikh R, Walsh PN (1992). "Components and assembly of the factor X activating complex".
8003: 7653: 5813: 3214:"Accurate measurement of volume and shape of resting and activated blood platelets from light scattering" 2489: 2057: 1766: 1303: 3599:"A critical role of thrombin/PAR-1 in ADP-induced platelet secretion and the second wave of aggregation" 2377:
usually associated with whole-blood platelets. Some sites may type platelets, but this is not critical.
1488: 1089:. Rat platelets do express tissue factor protein and carry both tissue factor pre-mRNA and mature mRNA. 1628: 1146: 835: 6266: 3269:
Moskalensky AE, Yurkin MA, Muliukov AR, Litvinenko AL, Nekrasov VM, Chernyshev AV, Maltsev VP (2018).
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Jain NC (June 1975). "A scanning electron microscopic study of platelets of certain animal species".
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Pecci, A; Balduini, CL (July 2021). "Inherited thrombocytopenias: an updated guide for clinicians".
4459:"Platelets kill bacteria by bridging innate and adaptive immunity via platelet factor 4 and FcγRIIA" 2877: 1807:
The three broad categories of platelet disorders are "not enough", "dysfunctional", and "too many".
1302:(GPVI). Proinflammatory platelet microvesicles trigger constant cytokine secretion from neighboring 8023: 7680: 7670: 6851: 6188:"Über einen neuen Forrnbestandteil des Blutes und dessen Rolle bei der Thrombose und Blutgerinnung" 6120:
Beale LS (1864). "On the Germinal Matter of the Blood, with Remarks upon the Formation of Fibrin".
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Hampton T (April 2018). "Platelets' Role in Adaptive Immunity May Contribute to Sepsis and Shock".
2439: 1504: 1008:λ granules (lambda granules) — contents involved in resorption during later stages of vessel repair 115: 7998: 7977: 7928: 7908: 7555: 6953: 6872: 6741: 4130:
Weyrich AS, Zimmerman GA (September 2004). "Platelets: signaling cells in the immune continuum".
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in 1841 drew pictures of platelets using the twin lens (compound) microscope invented in 1830 by
2447: 2280: 2176: 1819:(ITP) — formerly known as immune thrombocytopenic purpura and idiopathic thrombocytopenic purpura 1816: 1256: 1162: 237:
or lung, which then enter the circulation. Platelets are found only in mammals, whereas in other
1430: 7952: 7898: 7793: 7771: 7518: 7196: 7192: 3648:"Differential Sensitivity of Various Markers of Platelet Activation with Adenosine Diphosphate" 2574:
Laki K (December 1972). "Our ancient heritage in blood clotting and some of its consequences".
2279:. Platelet transfusion is generally ineffective, and thus contraindicated, for prophylaxis in 1938: 1896: 1734: 1105:
Platelet aggregation begins minutes after activation, and occurs as a result of turning on the
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American Association of Blood Banks (2011). Roback J, Grossman B, Harris T, Hillyer C (eds.).
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Kornerup KN, Page CP (August 2007). "The role of platelets in the pathophysiology of asthma".
4687: 8008: 7938: 7893: 7798: 7450: 7311: 7055: 7024: 7014: 4792: 4765: 4399:"Platelets amplify inflammation in arthritis via collagen-dependent microparticle production" 4308:"Thrombocyte inhibition restores protective immunity to mycobacterial infection in zebrafish" 4091:"Platelets and the innate immune system: mechanisms of bacterial-induced platelet activation" 2483: 1499: 1435: 1110: 984: 960: 928:
agents to attract more platelets to the site of endothelial injury. Granule characteristics:
738: 722: 715: 652: 470: 283: 206: 5330: 5313: 4500:"Platelet factor 4 and Duffy antigen required for platelet killing of Plasmodium falciparum" 2466:
Instead of platelets, non-mammalian vertebrates have nucleated thrombocytes, which resemble
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Platelet concentration in the blood (i.e. platelet count), can be measured manually using a
8013: 7903: 7818: 7808: 7690: 7632: 7511: 7485: 6948: 6009: 5912:"Platelets in tissue repair: control of apoptosis and interactions with regenerative cells" 5858: 5580: 5563: 4511: 4410: 4215: 3422: 3282: 3225: 3168: 2682: 2583: 2455: 2435: 2315: 2252: 2243: 2233: 1974: 1827: 1705: 1416: 1411:, or by placing blood in an automated platelet analyzer using particle counting, such as a 1295: 1214: 889: 656: 7352: 2671:"The lung is a site of platelet biogenesis and a reservoir for haematopoietic progenitors" 834:
production. Thrombin is a potent platelet activator, acting through Gq and G12. These are
8: 7888: 7878: 7528: 7362: 7339: 7320: 7302: 6997: 6736: 6711: 2355: 1789: 1547: 1391: 1073:
from the inner to the outer platelet membrane surface. These phospholipids then bind the
1018: 785: 753: 575: 313: 299: 278: 6013: 4627:
Stiff, Patrick J. (1990). Walker, H. Kenneth; Hall, W. Dallas; Hurst, J. Willis (eds.).
4515: 4414: 4219: 3426: 3286: 3229: 3172: 2686: 2587: 389:
Structurally the platelet can be divided into four zones, from peripheral to innermost:
7918: 7005: 6882: 6363: 6207: 6168: 6133: 6102: 6090: 6033: 5977: 5952: 5887: 5862: 5715: 5672: 5628: 5503: 5478: 5384: 5290: 5265: 5241: 5216: 5192: 5167: 5148: 5105: 5057: 5032: 4535: 4431: 4398: 4332: 4307: 4283: 4258: 4239: 4183: 4166: 4066: 3952: 3867: 3819: 3794: 3672: 3647: 3574: 3549: 3530: 3446: 3395: 3305: 3271:"Method for the simulation of blood platelet shape and its evolution during activation" 3270: 3251: 3189: 3156: 3029: 3004: 2864: 2822: 2711: 2670: 2650: 2607: 2595: 2537: 2364: 1447: 968: 839: 4457:
Palankar R, Kohler TP, Krauel K, Wesche J, Hammerschmidt S, Greinacher A (June 2018).
3180: 7972: 7967: 7853: 7550: 7481: 7390: 7347: 6746: 6248: 6243: 6226: 6094: 6025: 5982: 5933: 5892: 5839: 5829: 5775: 5766:
Schoenfeld H, Spies C, Jakob C (March 2006). "Volume-reduced platelet concentrates".
5748: 5738: 5707: 5703: 5664: 5660: 5620: 5616: 5585: 5544: 5534: 5508: 5494: 5458: 5448: 5425: 5420: 5403: 5376: 5335: 5295: 5246: 5217:"Deadly allies: the fatal interplay between platelets and metastasizing cancer cells" 5197: 5140: 5109: 5097: 5062: 5013: 4950: 4915: 4858: 4850: 4798: 4771: 4740: 4705: 4695: 4644: 4634: 4606: 4571: 4539: 4527: 4480: 4436: 4379: 4337: 4288: 4231: 4188: 4147: 4112: 4107: 4070: 4039: 3993: 3944: 3940: 3908: 3859: 3824: 3772: 3745: 3718: 3713: 3696: 3677: 3628: 3620: 3579: 3522: 3487: 3477: 3438: 3387: 3346: 3310: 3243: 3194: 3137: 3096: 3069: 3034: 2985: 2950: 2915: 2814: 2764: 2754: 2716: 2698: 2642: 2599: 2068: 1785: 1569: 1387: 1355: 1323: 1181:
defense molecules. Blood clotting supports immune function by trapping the bacteria.
1169:, facilitates both the hemostatic function and the encapsulation and phagocytosis of 1060: 956: 940: 746: 644: 443: 6367: 6211: 6172: 5719: 5676: 5632: 5355:"Ibuprofen protects platelet cyclooxygenase from irreversible inhibition by aspirin" 4665: 4243: 3956: 3871: 3534: 3255: 2826: 2654: 2611: 1450:. A healthy adult typically has 10 to 20 times more red blood cells than platelets. 505: 490: 321:. Platelets participate in both innate and adaptive intravascular immune responses. 7675: 7622: 7588: 7562: 7403: 7398: 6823: 6726: 6541: 6358: 6353: 6345: 6314: 6238: 6199: 6160: 6129: 6106: 6086: 6061: 6037: 6017: 5972: 5964: 5923: 5882: 5874: 5821: 5699: 5656: 5612: 5575: 5498: 5490: 5415: 5388: 5366: 5325: 5285: 5277: 5236: 5228: 5187: 5179: 5152: 5132: 5089: 5052: 5044: 5005: 4942: 4907: 4840: 4736: 4598: 4563: 4519: 4470: 4426: 4418: 4369: 4327: 4319: 4278: 4270: 4223: 4178: 4139: 4102: 4062: 4029: 3983: 3936: 3898: 3851: 3814: 3806: 3708: 3667: 3659: 3610: 3569: 3561: 3550:"Glycoprotein VI-dependent and -independent pathways of thrombus formation in vivo" 3514: 3469: 3450: 3430: 3399: 3377: 3338: 3300: 3290: 3233: 3184: 3176: 3127: 3061: 3024: 3016: 2977: 2942: 2907: 2852: 2804: 2706: 2690: 2634: 2591: 2507: 2300: 1774: 1750: 1342:
bacteria, platelets release reactive oxygen species (ROS), antimicrobial peptides,
1331: 1245: 1138: 877: 761: 742: 730: 451: 52: 5792: 2981: 521:
Each megakaryocyte produces between 1,000 and 3,000 platelets during its lifetime.
7962: 7776: 7543: 7538: 7070: 7049: 7035: 6772: 6561: 6493: 6377: 6282:
Osler W (1886). "On certain problems in the physiology of the blood corpuscles".
5968: 5928: 5911: 5799: 5232: 5183: 4227: 3903: 3886: 3810: 3473: 3295: 2479: 1888: 1412: 1165:(estimated to be over 400 million years old), the only blood cell type, the 1134: 741:
receptors on the surface of resting platelets. This event stimulates the coupled
666:
receptor binds with VWF; and GPVI receptor and integrin α2β1 bind with collagen.
120: 6318: 3132: 3115: 7848: 7743: 7658: 7618: 7583: 7408: 6838: 6818: 6767: 6611: 6556: 6536: 6531: 6453: 6417: 5825: 5093: 4767:
Point-of-Care Tests for Severe Hemorrhage: A Manual for Diagnosis and Treatment
4374: 4357: 3597:
Jiang, L.; Xu, C.; Yu, S.; Liu, P.; Luo, D.; Zhou, Q.; Gao, C.; Hu, H. (2013).
3565: 3382: 3365: 2911: 2380:
Prior to issuing platelets to the recipient, they may be irradiated to prevent
2101: 1979: 1862: 1754: 1351: 1338:, a receptor for IgG's constant fragment (Fc). When activated and bound to IgG 1078: 917: 865: 804:
Platelet activation begins seconds after adhesion occurs. It is triggered when
792:
pathway during a first wave of aggregation, leading to thrombin generation and
679: 515: 494: 474: 64: 6149:"Ein heizbarer Objecttisch und seine Verwendung bei Untersuchungen des Blutes" 5690:
Prowse CV (April 2013). "Component pathogen inactivation: a critical review".
5136: 4602: 3988: 3971: 3663: 3238: 3213: 2809: 2792: 256: 7992: 7833: 7626: 7493: 7221: 7145: 7100: 6918: 6828: 6473: 5843: 5752: 5462: 5314:"Summaries for patients. Platelet function after taking Ibuprofen for 1 week" 5281: 5048: 4919: 4854: 4709: 4358:"Migrating Platelets Are Mechano-scavengers that Collect and Bundle Bacteria" 4356:
Iannacone M, Haas R, Wanner G, Lauber K, Sixt M, Massberg S (November 2017).
4143: 3624: 3548:
Dubois C, Panicot-Dubois L, Merrill-Skoloff G, Furie B, Furie BC (May 2006).
3342: 2768: 2702: 2523: 1458: 1408: 1311: 1307: 1276: 1086: 980: 921: 819: 580: 466: 447: 423: 416: 329: 295: 230: 83: 6349: 6227:"Max Schultze (1865), G. Bizzozero (1882) and the discovery of the platelet" 5814:"4. The Pathophysiologic Basis for Wound Healing and Cutaneous Regeneration" 5548: 4628: 4523: 4422: 4323: 3157:"Geometry of normal mammalian platelets by quantitative microscopic studies" 2946: 1271:, in neutrophils, activates macrophages and activates cytotoxic response in 531: 7882: 7523: 7418: 7264: 7229: 6943: 6877: 6846: 6706: 6571: 6463: 6426: 6409: 6252: 5986: 5937: 5779: 5711: 5668: 5624: 5512: 5429: 5371: 5354: 5339: 5299: 5250: 5201: 5144: 5101: 5066: 5017: 5009: 4954: 4946: 4911: 4862: 4845: 4828: 4648: 4531: 4484: 4440: 4383: 4341: 4292: 4192: 4151: 4116: 4043: 3948: 3912: 3855: 3828: 3736:
White JG (December 1987). "An overview of platelet structural physiology".
3722: 3681: 3632: 3583: 3526: 3491: 3391: 3350: 3314: 3247: 3073: 3038: 2989: 2954: 2919: 2818: 2720: 2646: 2495: 2467: 2416: 2405: 2276: 2251:, a level below 50×10/L is associated with abnormal surgical bleeding, and 2193: 2166: 1847: 1837: 1822: 1521: 1272: 1070: 1045:, an uncooked frying egg in a pan, the "yolk" is the central body; and the 869: 734: 708: 700: 634: 630: 548: 394: 250: 222: 214: 56: 6098: 6029: 5896: 5589: 5380: 4610: 4575: 4235: 3997: 3863: 3776: 3749: 3518: 3442: 3141: 3100: 3065: 2603: 733:
that drives platelet conformational change and degranulation. Endothelial
7838: 7665: 7501: 7272: 7207: 7178: 7125: 6620: 6503: 5878: 3198: 2454:. Local application of these factors in increased concentrations through 2260: 2212: 2208: 2171: 2154: 2139: 1525: 1443: 1178: 1054: 975: 952: 925: 827: 778: 626: 605: 439: 431: 412: 397:
required for platelet adhesion, activation and aggregation. For example,
273: 234: 3547: 2694: 2667: 1462:
moderate platelet disorders and is no longer recommended for screening.
674: 7766: 7578: 7188: 7150: 7110: 7105: 7095: 6731: 6721: 6701: 6693: 6655: 6638: 6628: 6566: 6458: 6203: 6164: 4829:"Bleeding disorders in the tribe: result of consanguineous in breeding" 4034: 4017: 2856: 2544:
in his 1906 publication, changing to platelets in his 1910 publication.
2540:
examined blood smears using the stain named for him, and used the term
2427: 2349: 2319: 2311: 2304: 2268: 2216: 2204: 2149: 2134: 1842: 1801: 1781: 1758: 1514: 1380: 1260: 1186: 1174: 1114: 1106: 1066: 964: 944: 936: 893: 873: 864:
Collagen-mediated GPVI signalling increases the platelet production of
848: 823: 726: 678:
Scanning electron micrograph of blood cells. From left to right: human
600: 435: 406: 269: 238: 78: 60: 6966: 4567: 4475: 4458: 3925: 3763:
Behnke O (1970). "The morphology of blood platelet membrane systems".
3615: 3598: 3020: 2638: 1335: 781:
and related antiplatelet medications also work as purinergic receptor
145: 7843: 7725: 7614: 7287: 7244: 7239: 7234: 7120: 7115: 6938: 6784: 6716: 6667: 6633: 6498: 6478: 6468: 6021: 3434: 3052:
Furie B, Furie BC (August 2008). "Mechanisms of thrombus formation".
2526:
observed platelets and, in published lectures in 1886, called them a
2360: 2291: 2198: 2188: 2144: 2105: 1709: 1372: 1347: 1343: 1291: 1234: 1226: 1166: 996: 908: 888:. Platelets secrete thromboxane A2, which acts on the platelet's own 683: 459: 332:
which can promote wound healing and regeneration of damaged tissues.
246: 226: 194: 177: 6302: 6187: 6148: 4724: 4630:
Clinical Methods: The History, Physical, and Laboratory Examinations
3646:
Litvinov RI, Weisel JW, Andrianova IA, Peshkova AD, Minh GL (2018).
2520:: little plates. Bizzozero possibly proposed the name Blutplattchen. 1290:
Platelets also participate in chronic inflammatory disease, such as
756:
on the platelet surface. Since the thrombocytic purinergic receptor
324:
In addition to facilitating the clotting process, platelets contain
7598: 7183: 7173: 7168: 6911: 6684: 6672: 6648: 6643: 6431: 5525: 5442: 4499: 4274: 3268: 3211: 2431: 2256: 1797: 1793: 1770: 1762: 1509: 1327: 1230: 1190: 1185:
infection. The thrombosis is directed in concordance of platelets,
1170: 1002: 971: 844: 831: 789: 714:(prostacyclin). Endothelial-ADPase degrades the platelet activator 648: 622: 427: 325: 218: 210: 4668:. National Heart, Lung, and Blood Institute (NHLBI). 24 March 2022 4588: 1419:
include platelet count in their measurements, usually reported as
1061:
Platelet-coagulation factor interactions: coagulation facilitation
7957: 7923: 7435: 7277: 6813: 6660: 3468:. Methods in Molecular Biology. Vol. 788. pp. 341–366. 2512: 2412: 2248: 2129: 2097: 2015: 1852: 1730: 1675: 1376: 1339: 992: 704: 524:
An average of 10 platelets are produced daily in a healthy adult.
489:
In a first approximation, the shape can be considered similar to
455: 6077:
Robb-Smith AH (July 1967). "Why the platelets were discovered".
4552: 3645: 1149:, showing the connection between thrombocytes and immune cells. 317:
as fourth and fifth steps, while others would add a sixth step,
7868: 7202: 7059: 6901: 6777: 6441: 4259:"Platelets mediate cytotoxic T lymphocyte-induced liver damage" 3694: 3363: 2842:"Module 11: Cell Stress, Inflammatory Responses and Cell Death" 2327: 2010: 1999: 1908: 1738: 1268: 1264: 1259:(ROS) and upregulate expression of adhesion molecules, such as 1142: 1074: 303: 261: 7480: 5165: 4497: 3504: 2967: 609:
3D rendering of four inactivated and three activated platelets
473:
organized into a dense tubular system that is responsible for
290:. Third, they connect to each other through receptor bridges: 272:: the process of stopping bleeding at the site of interrupted 7947: 7933: 7913: 7250:
Protein Z-related protease inhibitor (ZPI) (inhibits FX, FXI)
7044: 7039: 6856: 4256: 2498:
in 1864 was the first to publish a drawing showing platelets.
2109: 1788:; extending an unstable or ruptured arterial plaque, causing 1252: 881: 813: 782: 770: 757: 202: 103: 46: 4018:"Platelets: bridging hemostasis, inflammation, and immunity" 3366:"Programmed anuclear cell death delimits platelet life span" 1097: 655:(VWF), which these cells produce. VWF is also stored in the 7942: 7813: 7788: 7064: 5645: 5526: 4794:
Perioperative Hemostasis: Coagulation for Anesthesiologists
4396: 4354: 3970:
Coller BS, Cheresh DA, Asch E, Seligsohn U (January 1991).
2160: 1299: 1283:
system (OCP), leading to a proposal to name the process as
1237:, and other inflammatory mediators. Platelets also secrete 912:
Diagram of the structure of a platelet showing the granules
872:. This occurs by altering the metabolic flux of platelet's 809: 766: 638: 402: 398: 282:. Second, they change shape, turn on receptors and secrete 242: 4456: 4205: 3969: 298:(primary hemostasis) is associated with activation of the 4826: 4305: 3463: 5564:"New trends in the preparation and storage of platelets" 4725:"The relation of blood platelets to hemorrhagic disease" 4057:
Levin J (2007), "The Evolution of Mammalian Platelets",
3327: 2534:; and described them as "a colorless protoplasmic disc". 2510:
in 1882 studied the blood of amphibians microscopically
2115: 1358:(PF4), connecting innate and adaptive immune responses. 6122:
Transactions of the Microscopical Society & Journal
5950: 5856: 5475: 5266:"Platelet power: sticky problems for sticky parasites?" 4898:
Cuker, Adam (2014). "Light Transmission Aggregometry".
3841: 796:
activation, which evokes a second wave of aggregation.
7255:
Tissue factor pathway inhibitor (TFPI) (inhibits FIII)
5793:
CBBS: Washed and volume-reduced Plateletpheresis units
2791:
Yip J, Shen Y, Berndt MC, Andrews RK (February 2005).
2100:
irreversibly disrupts platelet function by inhibiting
1796:
may partially obstruct blood flow, causing downstream
514:
Megakaryocyte and platelet production is regulated by
6425: 2028: 1715: 769:
couples to Gq that activates phospholipase C-beta 2 (
5999: 5802:. Cbbsweb.org (2001-10-25). Retrieved on 2011-11-14. 5765: 5602: 5352: 4995: 4822: 4820: 4818: 4816: 4814: 3412: 2851:. Vol. 6. Portland Press. pp. 11-1–11-30. 2790: 2263:. Finally, platelets may be transfused as part of a 2120:
These drugs are used to prevent thrombus formation.
1800:, or may completely obstruct it, causing downstream 509:
Platelets derive from multipotent marrow stem cells.
268:
One major function of platelets is to contribute to
63:
showing platelets (small purple dots) surrounded by
5401: 3884: 3792: 2624: 2555:
List of distinct cell types in the adult human body
573:It has been suggested that this article should be 7321:Thrombin-activatable fibrinolysis inhibitor (TAFI) 6407: 5811: 5735:Standards for Blood Banks and Transfusion Services 5531:Standards for Blood Banks and Transfusion Services 4790: 4171:Arteriosclerosis, Thrombosis, and Vascular Biology 1902:Vaccine-induced immune thrombotic thrombocytopenia 1699: 1465: 1361: 808:from the subendothelium binds with its receptors ( 7381:Activated protein C–protein C inhibitor (APC–PCI) 5812:Nguyen, D.T.; Orgill, D.P.; Murphy, G.F. (2009). 5447:(17th ed.). Bethesda MD: AABB. p. 580. 4811: 4088: 4015: 3005:"Platelet-rich plasma and regenerative dentistry" 2869:: CS1 maint: DOI inactive as of September 2024 ( 1049:, a cooked fried egg with a denser central body. 7990: 7716:Transfusion-associated graft versus host disease 5402:van Veen JJ, Nokes TJ, Makris M (January 2010). 4932: 4129: 2897: 2492:in 1842 drew pictures of a platelet-fibrin clot. 2382:transfusion-associated graft versus host disease 1765:), or due to unregulated production: one of the 1109:receptor, allowing these receptors to bind with 419:, allowing platelets to maintain a discoid shape 93:Formation of blood clots; prevention of bleeding 7230:Antithrombin (inhibits FII, FIX, FX, FXI, FXII) 5353:Rao GH, Johnson GG, Reddy KR, White JG (1983). 3793:Bouchard BA, Mann KG, Butenas S (August 2010). 1792:; and microcirculatory thrombosis. An arterial 1322:Activated platelets are able to participate in 1298:. Platelets are activated by collagen receptor 5214: 5030: 4763: 4022:International Journal of Laboratory Hematology 2786: 2784: 2782: 2780: 2778: 2458:(PRP) is used as an adjunct in wound healing. 1773:. A disorder of platelet function is called a 1394:. The symptoms depend on the thrombosis site. 518:, a hormone produced in the kidneys and liver. 7466: 6982: 6393: 6185: 5079: 4791:Marcucci, Carlo; Schoettker, Patrick (2014). 3788: 3786: 2271:. Platelet transfusion is contraindicated in 5759: 5639: 5596: 5395: 5159: 5122: 5116: 4686:Lind, Stuart E.; Kurkjian, Carla D. (2011). 4685: 4250: 4164: 4158: 3795:"No evidence for tissue factor on platelets" 3596: 2996: 2384:or they may be washed to remove the plasma. 2060:— platelets are both elevated and activated 1909:Altered platelet function (thrombocytopathy) 1251:Platelets are the largest source of soluble 1025:. The three steps along this path are named 854: 826:in the blood, which initiates the extrinsic 422:Organelle zone — rich in platelet granules. 7711:Transfusion associated circulatory overload 6303:"The Origin and Nature of the Blood Plates" 5850: 5555: 5346: 4199: 4089:Cox D, Kerrigan SW, Watson SP (June 2011). 3590: 2961: 2775: 2744: 2742: 2740: 2738: 2736: 2734: 2732: 2730: 896:receptors to their active form to initiate 7721:Febrile non-hemolytic transfusion reaction 7594:International Society of Blood Transfusion 7473: 7459: 6989: 6975: 6400: 6386: 6146: 6076: 5909: 4167:"Platelets in inflammation and thrombosis" 4016:Jenne CN, Urrutia R, Kubes P (June 2013). 3783: 3457: 3051: 2576:Annals of the New York Academy of Sciences 2087: 1704:In light transmission aggregometry (LTA), 1397: 1041:, an octopus with multiple arms and legs; 876:synthesis pathway, which involves enzymes 721:Resting platelets maintain active calcium 462:, which are platelet-activating mediators. 45: 7298:Plasminogen activator inhibitor-2 (PAI-2) 7293:Plasminogen activator inhibitor-1 (PAI-1) 6357: 6242: 6179: 5976: 5927: 5886: 5579: 5502: 5419: 5370: 5329: 5289: 5240: 5191: 5056: 5033:"Genetics of inherited thrombocytopenias" 4891: 4874: 4872: 4844: 4474: 4430: 4373: 4331: 4282: 4182: 4106: 4033: 3987: 3902: 3818: 3712: 3671: 3614: 3573: 3381: 3304: 3294: 3237: 3188: 3154: 3131: 3028: 2808: 2748: 2710: 1001:γ granules (gamma granules) — similar to 465:Membranous zone — membranes derived from 217:injury by clumping, thereby initiating a 205:component whose function (along with the 6271:. Munn & Company. 1882. p. 105. 6140: 4679: 4660: 4658: 4622: 4620: 3541: 3002: 2839: 2727: 2354: 2290: 2161:Drugs that stimulate platelet production 1875:(five known drugs — most problematic is 1662: 1429: 1096: 907: 859: 673: 604: 530: 504: 255: 27:Component of blood aiding in coagulation 6996: 6907:Megakaryocyte–erythroid progenitor cell 6307:The Boston Medical and Surgical Journal 5863:"Platelet phagocytosis and aggregation" 5331:10.7326/0003-4819-142-7-200504050-00004 5031:Warren, JT; Di Paola, J (2 June 2022). 4764:Ranucci, Marco; Simioni, Paolo (2016). 4694:(2nd ed.). Elsevier. p. 485. 2932: 2840:Berridge, Michael J. (1 October 2014). 2075:Associated with other myeloid neoplasms 2005:Aspirin-exacerbated respiratory disease 1708:is placed between a light source and a 1594:Von Willebrand disease (except Type 2B) 868:(TXA2) and decreases the production of 14: 7991: 7091:High-molecular-weight kininogen (HMWK) 6331: 6300: 6224: 6218: 6059: 5689: 5581:10.1046/j.1537-2995.1992.32192116428.x 5561: 5263: 4869: 4666:"Platelet Disorders: Thrombocytopenia" 4633:(3rd ed.). Boston: Butterworths. 4165:Wagner DD, Burger PC (December 2003). 3762: 3113: 2516:. He named Schultze's spherules (It.) 1930:Disorders of granule amount or release 1484: 1211:disseminated intravascular coagulation 1195:pathogen-associated molecular patterns 1005:and contain several hydrolytic enzymes 799: 788:. Data suggest that ADP activates the 535:Platelets extruded from megakaryocytes 442:, platelet-derived growth factor, and 356:is used interchangeably with the word 7706:Transfusion related acute lung injury 7454: 6970: 6381: 6334:"The histogenesis of blood platelets" 6281: 6119: 4897: 4655: 4626: 4617: 4463:Journal of Thrombosis and Haemostasis 4452: 4450: 4095:Journal of Thrombosis and Haemostasis 4056: 4011: 4009: 4007: 3844:Seminars in Thrombosis and Hemostasis 3735: 3603:Journal of Thrombosis and Haemostasis 3507:Seminars in Thrombosis and Hemostasis 3089:Thrombosis et Diathesis Haemorrhagica 2793:"Primary platelet adhesion receptors" 2434:, which stimulates the deposition of 2182: 2116:Drugs that suppress platelet function 2094:non-steroidal anti-inflammatory drugs 1873:Drug-induced thrombocytopenic purpura 1749:Low platelet concentration is called 1330:. They are able to specifically bind 1177:of intracellular granules containing 5737:(26th ed.). Bethesda MD: AABB. 5732: 5533:(22nd ed.). Bethesda MD: AABB. 5215:Erpenbeck L, Schön MP (April 2010). 4722: 3086: 2970:Cytokine & Growth Factor Reviews 2893: 2891: 2889: 2887: 2573: 1317: 1199:damage-associated molecular patterns 1012: 981:δ granules (delta or dense granules) 903: 559: 364:arises from physiologic hemostasis, 249:), thrombocytes circulate as intact 7376:Thrombin–antithrombin complex (TAT) 5818:Biomaterials For Treating Skin Loss 5527:American Association of Blood Banks 4880:"Why Perform Platelet Aggregation?" 3054:The New England Journal of Medicine 2415:, and the platelets are cleared by 2390:platelet transfusion refractoriness 2273:thrombotic thrombocytopenic purpura 1995:Paroxysmal nocturnal hemoglobinuria 1858:Thrombotic thrombocytopenic purpura 1810: 1155: 426:contain clotting mediators such as 24: 7283:Tissue plasminogen activator (tPA) 7240:Protein S (cofactor for protein C) 6134:10.1111/j.1365-2818.1864.tb01625.x 6091:10.1111/j.1365-2141.1967.tb00769.x 4978:. Virginia Commonwealth University 4447: 4312:The Journal of Infectious Diseases 4184:10.1161/01.ATV.0000095974.95122.EC 4004: 2596:10.1111/j.1749-6632.1972.tb16342.x 2452:vascular endothelial growth factor 2332:riboflavin and UV light treatments 2029:Thrombocytosis and thrombocythemia 1716:Whole blood impedance aggregometry 1371:purplish stain named by its size: 1128: 838:and they turn on calcium-mediated 25: 8035: 7749:Transfusion transmitted infection 5910:Gawaz M, Vogel S (October 2013). 4833:Orphanet Journal of Rare Diseases 2884: 2020:Decreased cyclooxygenase activity 1946:Decreased cyclooxygenase activity 1777:or a platelet function disorder. 1487:by disorders and agonists   1133:Platelets have a central role in 1069:, which moves negatively charged 699:platelet activation by producing 6244:10.1111/j.1365-2141.2006.06036.x 5704:10.1111/j.1423-0410.2012.01662.x 5661:10.1111/j.1537-2995.2005.04350.x 5617:10.1111/j.1537-2995.2004.03355.x 5495:10.1182/bloodadvances.2019000812 5421:10.1111/j.1365-2141.2009.07899.x 4741:10.1001/jama.1910.04330140029009 4108:10.1111/j.1538-7836.2011.04264.x 4067:10.1016/B978-012369367-9/50763-1 3941:10.1111/j.1365-2141.2005.05897.x 3714:10.1111/j.1742-4658.2008.06829.x 2876: 1971:Disorders of coagulant activity 1950:Platelet storage pool deficiency 1877:heparin-induced thrombocytopenia 1453: 1415:or optical methods. Most common 1101:Platelet clumps in a blood smear 564: 140:Anatomical terms of microanatomy 67:(large gray circular structures) 7371:Prothrombin fragment 1+2 (F1+2) 7031:Platelet membrane glycoproteins 6325: 6294: 6275: 6259: 6113: 6070: 6053: 6044: 5993: 5944: 5903: 5857:Movat HZ, Weiser WJ, Glynn MF, 5805: 5786: 5726: 5683: 5519: 5469: 5436: 5306: 5257: 5208: 5073: 5024: 4989: 4961: 4926: 4784: 4757: 4747: 4716: 4690:. In Michelson, Alan D. (ed.). 4582: 4546: 4491: 4390: 4348: 4299: 4123: 4082: 4050: 3963: 3919: 3878: 3835: 3756: 3729: 3688: 3639: 3498: 3406: 3357: 3321: 3262: 3205: 3148: 3107: 3080: 3045: 2399: 2082: 2046:Hyposplenism (post-splenectomy) 1700:Light transmission aggregometry 1482: 1478:multiple electrode aggregometry 1472:Multiple electrode aggregometry 1466:Multiple electrode aggregometry 1362:Signs and symptoms of disorders 1220: 1161:evolution. For example, in the 1017:As shown by flow cytometry and 752:ADP on the other hand binds to 547:Old platelets are destroyed by 7235:Protein C (inhibits FV, FVIII) 6231:British Journal of Haematology 6192:Arch Pathol Anat Phys Klin Med 6079:British Journal of Haematology 5408:British Journal of Haematology 3929:British Journal of Haematology 2926: 2833: 2661: 2627:British Journal of Haematology 2618: 2567: 2461: 2424:platelet-derived growth factor 2238: 2227: 2123: 1885:Neonatal alloimmune associated 1402: 1239:platelet-derived growth factor 1092: 949:platelet-derived growth factor 695:The intact endothelial lining 500: 13: 1: 6066:. London: Macmillan & Co. 5820:. CRC Press. pp. 25–57. 4969:"Platelet Function Assay FAQ" 3181:10.1016/s0006-3495(76)85756-6 2982:10.1016/j.cytogfr.2021.11.003 2560: 2359:Platelets collected by using 2286: 1485:Platelet aggregation function 945:transforming growth factor-β1 690: 669: 647:attach to the subendothelial 555: 379: 7638:Intraoperative blood salvage 6598:Extramedullary hematopoiesis 6060:Godlee, Sir Rickman (1917). 5969:10.1182/blood-2011-02-338244 5929:10.1182/blood-2013-05-468694 5233:10.1182/blood-2009-10-247296 5184:10.1182/blood-2011-10-384826 4797:. Springer. pp. 54–56. 4770:. Springer. pp. 40–42. 4228:10.1126/science.273.5272.252 3904:10.1182/blood-2013-05-501924 3811:10.1182/blood-2010-05-285627 3474:10.1007/978-1-61779-307-3_23 3466:Platelets and Megakaryocytes 3296:10.1371/journal.pcbi.1005899 3218:Journal of Biomedical Optics 3114:Paulus JM (September 1975). 2444:insulin-like growth factor 1 2265:massive transfusion protocol 2222: 2058:Myeloproliferative neoplasms 1767:myeloproliferative neoplasms 1744: 1304:fibroblast-like synoviocytes 1255:which induces production of 1023:scanning electron microscopy 816:) and more calcium release. 775:inositol 1,4,5-trisphosphate 384: 7: 7654:Blood compatibility testing 7111:Factor XII (Hageman factor) 7025:von Willebrand factor (vWF) 6319:10.1056/NEJM190606071542301 5867:The Journal of Cell Biology 5318:Annals of Internal Medicine 4061:, Elsevier, pp. 3–22, 3133:10.1182/blood.V46.3.321.321 3003:Xu J, Gou L, Qiu S (2020). 2749:Michelson, Alan D. (2013). 2548: 2371: 933:α granules (alpha granules) 836:G protein-coupled receptors 617: 352:In some contexts, the word 10: 8040: 7431:-antiplasmin complex (PAP) 7146:Factor III (tissue factor) 5826:10.1533/9781845695545.1.25 5768:Current Hematology Reports 5562:Högman CF (January 1992). 5094:10.1016/j.blre.2020.100784 4375:10.1016/j.cell.2017.11.001 3566:10.1182/blood-2005-09-3687 3383:10.1016/j.cell.2007.01.037 3275:PLOS Computational Biology 2912:10.1016/j.smim.2016.10.010 2753:(3rd ed.). Academic. 2473: 2403: 2338: 2231: 1960:Glanzmann's thrombasthenia 1724: 1624:Glanzmann's thrombasthenia 1469: 1147:inflammatory bowel disease 598: 393:Peripheral zone — rich in 187: 170: 29: 7757: 7701:Transfusion hemosiderosis 7689: 7646: 7607: 7571: 7492: 7417: 7389: 7361: 7338: 7329: 7263: 7220: 7159: 7134: 7079: 7013: 7004: 6931: 6891: 6865: 6837: 6804: 6764:Antigen-presenting cells 6757: 6692: 6683: 6619: 6610: 6590: 6552: 6527: 6518: 6489: 6449: 6440: 6416: 5137:10.1080/09537100701230436 4603:10.3109/10428199609074364 3989:10.1182/blood.V77.1.75.75 3664:10.1007/s12668-018-0586-4 3239:10.1117/1.JBO.18.1.017001 3009:Australian Dental Journal 2810:10.1080/15216540500078962 2064:Essential thrombocythemia 1956:Disorders of aggregation 1934:Hermansky–Pudlak syndrome 1868:Hemolytic–uremic syndrome 1834:Familial thrombocytopenia 1769:or certain other myeloid 1680: 1678:or aspirin-like disorder 855:Components (consequences) 579:into multiple articles. ( 184: 'clot' and 138: 126: 114: 102: 97: 89: 77: 72: 44: 39: 32:Platelet (disambiguation) 7681:Monocyte monolayer assay 7353:β-Thromboglobulin (β-TG) 6852:Nucleated red blood cell 6408:Myeloid blood cells and 5282:10.1016/j.pt.2009.04.002 5049:10.1182/blood.2020009300 4144:10.1016/j.it.2004.07.003 3343:10.1182/blood.V95.8.2514 2440:fibroblast growth factor 1965:Wiskott–Aldrich syndrome 1927:Disorders of activation 1921:Bernard–Soulier syndrome 1599:Bernard–Soulier syndrome 1438:-initiated aggregation. 551:in the spleen and liver. 481: 225:; they are fragments of 7556:Granulocyte transfusion 7348:Platelet factor 4 (PF4) 7245:Protein Z (inhibits FX) 7179:Prothrombin (factor II) 6954:Hematopoietic stem cell 6873:Leukocyte extravasation 6742:Foreign-body giant cell 6359:2027/hvd.32044107223588 6350:10.1002/jmor.1050210204 5324:(7): I–54. April 2005. 5264:Pleass RJ (July 2009). 4976:Department of Pathology 4591:Leukemia & Lymphoma 4524:10.1126/science.1228892 4423:10.1126/science.1181928 2947:10.1001/jama.2017.12859 2849:Cell Signalling Biology 2448:epidermal growth factor 2281:immune thrombocytopenia 2275:(TTP), as it fuels the 2177:Thrombopoietin mimetics 2088:Anti-inflammatory drugs 1817:Immune thrombocytopenia 1659:Storage pool deficiency 1398:Measurement and Testing 1257:reactive oxygen species 1163:Atlantic horseshoe crab 920:, lambda granules, and 625:formation on an intact 411:Sol-gel zone — rich in 335: 7404:Fibrinopeptide B (FpB) 7399:Fibrinopeptide A (FpA) 7071:Glycoprotein VI (GPVI) 7036:Glycoprotein Ib (GPIb) 6225:Brewer DB (May 2006). 6186:Bizzozero, J. (1882). 5372:10.1161/01.ATV.3.4.383 5270:Trends in Parasitology 5010:10.1515/cclm-2022-0666 4947:10.1055/s-0029-1220325 4912:10.1182/hem.V11.2.2555 4846:10.1186/1750-1172-5-23 3856:10.1055/s-2007-1002570 3116:"Platelet size in man" 2900:Seminars in Immunology 2859:(inactive 2024-09-18). 2368: 2296: 1991:Disorders of adhesion 1939:Gray platelet syndrome 1917:Disorders of adhesion 1897:Pseudothrombocytopenia 1893:Transfusion-associated 1735:von Willebrand disease 1439: 1102: 913: 886:thromboxane-A synthase 687: 682:, activated platelet, 610: 536: 510: 265: 7691:Transfusion reactions 7222:Anticoagulant factors 7189:Fibrinogen (factor I) 7184:Thrombin (factor IIa) 7056:Glycoprotein IIb/IIIa 7050:Glycoprotein IX (GP9) 7017:(platelet activation) 6338:Journal of Morphology 4324:10.1093/infdis/jiz110 3519:10.1055/s-2005-869528 3155:Frojmovic MM (1976). 3066:10.1056/NEJMra0801082 2484:Joseph Jackson Lister 2358: 2294: 2007:(AERD/Samter's triad) 1433: 1417:blood testing methods 1100: 911: 890:thromboxane receptors 860:GPIIb/IIIa activation 677: 653:von Willebrand factor 608: 534: 508: 471:endoplasmic reticulum 446:. Delta granules, or 259: 8019:Transfusion medicine 7671:Kleihauer–Betke test 7633:Exchange transfusion 7512:Platelet transfusion 7486:transfusion medicine 7409:Fibrin monomers (FM) 7265:Fibrinolytic factors 7083:(contact activation) 6949:Hematopoietic system 6737:Langhans giant cells 5879:10.1083/jcb.27.3.531 4132:Trends in Immunology 3765:Series Haematologica 2456:platelet-rich plasma 2436:extracellular matrix 2316:platelet-rich plasma 2295:Platelet concentrate 2253:regional anaesthetic 2244:Platelet transfusion 2234:Platelet transfusion 2040:Chronic inflammation 1975:COAT platelet defect 1882:Pregnancy-associated 1706:platelet-rich plasma 1296:rheumatoid arthritis 1215:deep vein thrombosis 830:cascade to increase 754:purinergic receptors 745:protein to increase 657:Weibel-Palade bodies 294:. Formation of this 221:. Platelets have no 201: 'cell') are a 30:For other uses, see 18:Platelet aggregation 7759:Blood group systems 7694:and adverse effects 7529:Fresh frozen plasma 7363:Thrombin generation 7340:Platelet activation 7331:Coagulation markers 7006:Coagulation factors 6998:Coagulation cascade 6712:Alveolar macrophage 6268:Scientific American 6147:Schultze M (1865). 6014:1968Natur.220..509B 5529:(2003). "5.1.5.1". 4935:Semin Thromb Hemost 4688:"The bleeding time" 4516:2012Sci...338.1348M 4415:2010Sci...327..580B 4220:1996Sci...273..252D 3427:1987Natur.327..524P 3287:2018PLSCB..14E5899M 3230:2013JBO....18a7001M 3173:1976BpJ....16.1071F 3161:Biophysical Journal 2695:10.1038/nature21706 2687:2017Natur.544..105L 2588:1972NYASA.202..297L 2446:, platelet-derived 2255:procedures such as 1943:ADP receptor defect 1790:arterial thrombosis 1615:Decreased or absent 1582:Decreased or absent 1548:Adrenergic receptor 1493: 1392:arterial thrombosis 1326:, interacting with 1306:, most prominently 1019:electron microscopy 969:coagulation factors 800:Trigger (induction) 314:platelet inhibition 300:coagulation cascade 284:chemical messengers 207:coagulation factors 8004:Coagulation system 7203:Fibrin (factor Ia) 7015:Primary hemostasis 6883:Intrinsic immunity 6747:Touton giant cells 6332:Wright JH (1910). 6301:Wright JH (1906). 6204:10.1007/BF01931360 6165:10.1007/BF02961404 5798:2014-04-14 at the 4884:Helena Biosciences 4597:(Suppl 1): 79–82. 4556:Acta Haematologica 4035:10.1111/ijlh.12084 2857:10.1042/csb0001011 2422:Platelets release 2369: 2365:American Red Cross 2301:platelet apheresis 2297: 2183:Intravenous agents 1682:Absent second wave 1664:Absent second wave 1524:defect (including 1483: 1440: 1103: 916:Platelets contain 914: 840:signaling pathways 688: 611: 537: 511: 444:chemotactic agents 266: 7986: 7985: 7563:Blood substitutes 7551:White blood cells 7482:Blood transfusion 7448: 7447: 7444: 7443: 7391:Fibrin generation 7216: 7215: 7136:Extrinsic pathway 7081:Intrinsic pathway 6964: 6963: 6927: 6926: 6800: 6799: 6727:Epithelioid cells 6606: 6605: 6586: 6585: 6582: 6581: 6514: 6513: 6153:Arch Mikrosk Anat 6008:(5166): 509–510. 5861:(December 1965). 5835:978-1-4200-9989-8 5744:978-1-56395-289-0 5540:978-1-56395-173-2 5489:(22): 3780–3817. 5454:978-1-56395-315-6 4998:Clin Chem Lab Med 4804:978-3-642-55004-1 4777:978-3-319-24795-3 4701:978-0-08-046586-9 4640:978-0-409-90077-4 4568:10.1159/000204725 4510:(6112): 1348–51. 4476:10.1111/jth.13955 4076:978-0-12-369367-9 3616:10.1111/jth.12168 3483:978-1-61779-306-6 3021:10.1111/adj.12754 2760:978-0-12-387837-3 2639:10.1111/bjh.12758 2426:(PDGF), a potent 2069:Polycythemia vera 2037:Chronic infection 1828:Gaucher's disease 1786:venous thrombosis 1695: 1694: 1570:Collagen receptor 1388:venous thrombosis 1356:platelet factor 4 1346:, kinocidins and 1324:adaptive immunity 1318:Adaptive immunity 1013:Morphology change 957:B-thromboglobulin 941:platelet factor 4 904:Granule secretion 882:cyclo-oxygenase 1 747:adenylate cyclase 645:Endothelial cells 597: 596: 302:, with resultant 251:mononuclear cells 229:derived from the 209:) is to react to 154: 153: 149: 16:(Redirected from 8031: 7676:Antibody elution 7623:plateletpheresis 7589:Blood management 7572:General concepts 7475: 7468: 7461: 7452: 7451: 7336: 7335: 7011: 7010: 6991: 6984: 6977: 6968: 6967: 6898:Precursor cells 6824:Promegakaryocyte 6690: 6689: 6617: 6616: 6542:Promegakaryocyte 6525: 6524: 6447: 6446: 6438: 6437: 6423: 6422: 6402: 6395: 6388: 6379: 6378: 6372: 6371: 6361: 6329: 6323: 6322: 6298: 6292: 6291: 6284:The Medical News 6279: 6273: 6272: 6263: 6257: 6256: 6246: 6222: 6216: 6215: 6183: 6177: 6176: 6144: 6138: 6137: 6117: 6111: 6110: 6074: 6068: 6067: 6057: 6051: 6048: 6042: 6041: 6022:10.1038/220509a0 5997: 5991: 5990: 5980: 5948: 5942: 5941: 5931: 5907: 5901: 5900: 5890: 5854: 5848: 5847: 5809: 5803: 5790: 5784: 5783: 5763: 5757: 5756: 5730: 5724: 5723: 5687: 5681: 5680: 5643: 5637: 5636: 5600: 5594: 5593: 5583: 5559: 5553: 5552: 5523: 5517: 5516: 5506: 5473: 5467: 5466: 5445:Technical Manual 5440: 5434: 5433: 5423: 5399: 5393: 5392: 5374: 5359:Arteriosclerosis 5350: 5344: 5343: 5333: 5310: 5304: 5303: 5293: 5261: 5255: 5254: 5244: 5212: 5206: 5205: 5195: 5163: 5157: 5156: 5120: 5114: 5113: 5077: 5071: 5070: 5060: 5028: 5022: 5021: 4993: 4987: 4986: 4984: 4983: 4973: 4965: 4959: 4958: 4930: 4924: 4923: 4900:The Hematologist 4895: 4889: 4887: 4876: 4867: 4866: 4848: 4824: 4809: 4808: 4788: 4782: 4781: 4761: 4755: 4751: 4745: 4744: 4723:Duke WW (1910). 4720: 4714: 4713: 4683: 4677: 4676: 4674: 4673: 4662: 4653: 4652: 4624: 4615: 4614: 4586: 4580: 4579: 4550: 4544: 4543: 4495: 4489: 4488: 4478: 4454: 4445: 4444: 4434: 4394: 4388: 4387: 4377: 4352: 4346: 4345: 4335: 4303: 4297: 4296: 4286: 4254: 4248: 4247: 4203: 4197: 4196: 4186: 4162: 4156: 4155: 4127: 4121: 4120: 4110: 4101:(6): 1097–1107. 4086: 4080: 4079: 4054: 4048: 4047: 4037: 4013: 4002: 4001: 3991: 3967: 3961: 3960: 3923: 3917: 3916: 3906: 3882: 3876: 3875: 3839: 3833: 3832: 3822: 3790: 3781: 3780: 3760: 3754: 3753: 3744:(4): 1677–1700. 3738:Scanning Microsc 3733: 3727: 3726: 3716: 3701:The FEBS Journal 3692: 3686: 3685: 3675: 3643: 3637: 3636: 3618: 3594: 3588: 3587: 3577: 3545: 3539: 3538: 3502: 3496: 3495: 3461: 3455: 3454: 3435:10.1038/327524a0 3410: 3404: 3403: 3385: 3361: 3355: 3354: 3325: 3319: 3318: 3308: 3298: 3266: 3260: 3259: 3241: 3209: 3203: 3202: 3192: 3152: 3146: 3145: 3135: 3111: 3105: 3104: 3084: 3078: 3077: 3049: 3043: 3042: 3032: 3000: 2994: 2993: 2965: 2959: 2958: 2930: 2924: 2923: 2895: 2882: 2881: 2880: 2874: 2868: 2860: 2846: 2837: 2831: 2830: 2812: 2788: 2773: 2772: 2746: 2725: 2724: 2714: 2665: 2659: 2658: 2622: 2616: 2615: 2571: 2508:Giulio Bizzozero 2052:Acute blood loss 1811:Thrombocytopenia 1775:thrombocytopathy 1757:, and is either 1751:thrombocytopenia 1494: 1492: 1367:sequestration.) 1156:Immunothrombosis 1139:thrombocytopenia 878:phospholipase A2 773:), resulting in 731:second messenger 629:is prevented by 592: 589: 568: 567: 560: 491:oblate spheroids 376:is the process. 346:thrombocytopenia 198: 191: 181: 174: 146:edit on Wikidata 143: 53:light microscope 49: 37: 36: 21: 8039: 8038: 8034: 8033: 8032: 8030: 8029: 8028: 8024:1842 in science 7989: 7988: 7987: 7982: 7777:Secretor status 7753: 7693: 7685: 7642: 7603: 7567: 7544:Cryosupernatant 7539:Cryoprecipitate 7519:Red blood cells 7488: 7479: 7449: 7440: 7430: 7413: 7385: 7357: 7325: 7315: 7306: 7259: 7212: 7155: 7138:(tissue factor) 7137: 7130: 7082: 7075: 7016: 7000: 6995: 6965: 6960: 6923: 6887: 6866:Immune response 6861: 6839:Red blood cells 6833: 6796: 6773:Langerhans cell 6768:Dendritic cells 6753: 6679: 6602: 6578: 6562:Proerythroblast 6548: 6510: 6494:Monocytopoiesis 6485: 6429: 6412: 6406: 6376: 6375: 6330: 6326: 6299: 6295: 6280: 6276: 6265: 6264: 6260: 6223: 6219: 6184: 6180: 6145: 6141: 6118: 6114: 6075: 6071: 6058: 6054: 6049: 6045: 5998: 5994: 5949: 5945: 5908: 5904: 5855: 5851: 5836: 5810: 5806: 5800:Wayback Machine 5791: 5787: 5764: 5760: 5745: 5731: 5727: 5688: 5684: 5644: 5640: 5601: 5597: 5560: 5556: 5541: 5524: 5520: 5474: 5470: 5455: 5441: 5437: 5400: 5396: 5351: 5347: 5312: 5311: 5307: 5262: 5258: 5227:(17): 3427–36. 5213: 5209: 5164: 5160: 5121: 5117: 5078: 5074: 5043:(22): 3264–77. 5029: 5025: 4994: 4990: 4981: 4979: 4971: 4967: 4966: 4962: 4931: 4927: 4896: 4892: 4878: 4877: 4870: 4825: 4812: 4805: 4789: 4785: 4778: 4762: 4758: 4752: 4748: 4735:(14): 1185–92. 4721: 4717: 4702: 4684: 4680: 4671: 4669: 4664: 4663: 4656: 4641: 4625: 4618: 4587: 4583: 4551: 4547: 4496: 4492: 4455: 4448: 4409:(5965): 580–3. 4395: 4391: 4353: 4349: 4304: 4300: 4263:Nature Medicine 4255: 4251: 4214:(5272): 252–5. 4204: 4200: 4163: 4159: 4128: 4124: 4087: 4083: 4077: 4055: 4051: 4014: 4005: 3968: 3964: 3924: 3920: 3883: 3879: 3840: 3836: 3791: 3784: 3761: 3757: 3734: 3730: 3693: 3689: 3644: 3640: 3595: 3591: 3546: 3542: 3503: 3499: 3484: 3462: 3458: 3421:(6122): 524–6. 3411: 3407: 3362: 3358: 3326: 3322: 3281:(3): e1005899. 3267: 3263: 3210: 3206: 3153: 3149: 3112: 3108: 3085: 3081: 3050: 3046: 3001: 2997: 2966: 2962: 2931: 2927: 2896: 2885: 2875: 2862: 2861: 2844: 2838: 2834: 2789: 2776: 2761: 2747: 2728: 2681:(7648): 105–9. 2666: 2662: 2623: 2619: 2572: 2568: 2563: 2551: 2528:third corpuscle 2490:William Addison 2480:George Gulliver 2476: 2464: 2408: 2402: 2374: 2367:donation center 2341: 2289: 2241: 2236: 2230: 2225: 2185: 2163: 2126: 2118: 2090: 2085: 2049:Iron deficiency 2031: 1911: 1889:Aplastic anemia 1813: 1761:, reactive (to 1747: 1727: 1718: 1702: 1629:Afibrinogenemia 1474: 1468: 1456: 1413:Coulter counter 1405: 1400: 1364: 1320: 1300:glycoprotein IV 1223: 1158: 1135:innate immunity 1131: 1129:Immune function 1095: 1063: 1039:early dendritic 1027:early dendritic 1015: 906: 862: 857: 802: 712: 693: 672: 620: 603: 593: 587: 584: 569: 565: 558: 543: 503: 484: 387: 382: 372:is the result, 338: 150: 68: 65:red blood cells 55:(500 ×) from a 35: 28: 23: 22: 15: 12: 11: 5: 8037: 8027: 8026: 8021: 8016: 8011: 8006: 8001: 7999:Blood products 7984: 7983: 7981: 7980: 7975: 7970: 7965: 7960: 7955: 7950: 7945: 7936: 7931: 7926: 7921: 7916: 7911: 7906: 7901: 7896: 7891: 7886: 7876: 7871: 7866: 7861: 7856: 7851: 7846: 7841: 7836: 7831: 7826: 7821: 7816: 7811: 7806: 7801: 7796: 7791: 7786: 7781: 7780: 7779: 7769: 7763: 7761: 7755: 7754: 7752: 7751: 7746: 7744:Serum sickness 7741: 7740: 7739: 7734: 7723: 7718: 7713: 7708: 7703: 7697: 7695: 7687: 7686: 7684: 7683: 7678: 7673: 7668: 7663: 7662: 7661: 7659:Cross-matching 7650: 7648: 7644: 7643: 7641: 7640: 7635: 7630: 7619:plasmapheresis 7611: 7609: 7605: 7604: 7602: 7601: 7596: 7591: 7586: 7584:Blood donation 7581: 7575: 7573: 7569: 7568: 7566: 7565: 7560: 7559: 7558: 7548: 7547: 7546: 7541: 7536: 7531: 7521: 7516: 7515: 7514: 7504: 7498: 7496: 7494:Blood products 7490: 7489: 7478: 7477: 7470: 7463: 7455: 7446: 7445: 7442: 7441: 7439: 7438: 7433: 7428: 7423: 7421: 7415: 7414: 7412: 7411: 7406: 7401: 7395: 7393: 7387: 7386: 7384: 7383: 7378: 7373: 7367: 7365: 7359: 7358: 7356: 7355: 7350: 7344: 7342: 7333: 7327: 7326: 7324: 7323: 7318: 7316:-Macroglobulin 7313: 7309: 7304: 7300: 7295: 7290: 7285: 7280: 7275: 7269: 7267: 7261: 7260: 7258: 7257: 7252: 7247: 7242: 7237: 7232: 7226: 7224: 7218: 7217: 7214: 7213: 7211: 7210: 7205: 7200: 7186: 7181: 7176: 7171: 7165: 7163: 7161:Common pathway 7157: 7156: 7154: 7153: 7148: 7142: 7140: 7132: 7131: 7129: 7128: 7123: 7118: 7113: 7108: 7103: 7098: 7093: 7087: 7085: 7077: 7076: 7074: 7073: 7068: 7062: 7053: 7047: 7042: 7027: 7021: 7019: 7008: 7002: 7001: 6994: 6993: 6986: 6979: 6971: 6962: 6961: 6959: 6958: 6957: 6956: 6946: 6941: 6935: 6933: 6929: 6928: 6925: 6924: 6922: 6921: 6916: 6915: 6914: 6909: 6904: 6895: 6893: 6889: 6888: 6886: 6885: 6880: 6875: 6869: 6867: 6863: 6862: 6860: 6859: 6854: 6849: 6843: 6841: 6835: 6834: 6832: 6831: 6826: 6821: 6819:Megakaryoblast 6816: 6810: 6808: 6802: 6801: 6798: 6797: 6795: 6794: 6793: 6792: 6782: 6781: 6780: 6775: 6770: 6761: 6759: 6755: 6754: 6752: 6751: 6750: 6749: 6744: 6739: 6729: 6724: 6719: 6714: 6709: 6704: 6698: 6696: 6687: 6681: 6680: 6678: 6677: 6676: 6675: 6665: 6664: 6663: 6653: 6652: 6651: 6641: 6636: 6631: 6625: 6623: 6614: 6612:Myeloid tissue 6608: 6607: 6604: 6603: 6601: 6600: 6594: 6592: 6588: 6587: 6584: 6583: 6580: 6579: 6577: 6576: 6575: 6574: 6569: 6564: 6557:Erythropoiesis 6553: 6550: 6549: 6547: 6546: 6545: 6544: 6539: 6537:Megakaryoblast 6532:Thrombopoiesis 6528: 6522: 6516: 6515: 6512: 6511: 6509: 6508: 6507: 6506: 6501: 6490: 6487: 6486: 6484: 6483: 6482: 6481: 6476: 6471: 6466: 6461: 6454:Granulopoiesis 6450: 6444: 6435: 6420: 6414: 6413: 6405: 6404: 6397: 6390: 6382: 6374: 6373: 6344:(2): 263–278. 6324: 6293: 6274: 6258: 6217: 6198:(2): 261–332. 6178: 6139: 6112: 6085:(4): 618–637. 6069: 6052: 6043: 5992: 5963:(13): 3661–9. 5943: 5922:(15): 2550–4. 5902: 5873:(3): 531–543. 5849: 5834: 5804: 5785: 5758: 5743: 5725: 5698:(3): 183–199. 5682: 5638: 5611:(6): 877–885. 5595: 5554: 5539: 5518: 5468: 5453: 5435: 5394: 5345: 5305: 5256: 5207: 5178:(16): 3790–8. 5158: 5131:(5): 319–328. 5115: 5072: 5023: 5004:(5): 851–860. 4988: 4960: 4941:(2): 168–180. 4925: 4890: 4868: 4810: 4803: 4783: 4776: 4756: 4746: 4715: 4700: 4678: 4654: 4639: 4616: 4581: 4562:(1–2): 83–87. 4545: 4490: 4469:(6): 1187–97. 4446: 4389: 4368:(6): 1368–82. 4347: 4318:(3): 524–534. 4298: 4275:10.1038/nm1317 4269:(11): 1167–9. 4249: 4198: 4177:(12): 2131–7. 4157: 4138:(9): 489–495. 4122: 4081: 4075: 4049: 4028:(3): 254–261. 4003: 3962: 3935:(4): 494–502. 3918: 3897:(8): 1250–60. 3877: 3850:(3): 311–323. 3834: 3782: 3755: 3728: 3707:(3): 845–856. 3687: 3652:BioNanoScience 3638: 3609:(5): 930–940. 3589: 3560:(10): 3902–6. 3540: 3513:(2): 234–246. 3497: 3482: 3456: 3405: 3376:(6): 1173–86. 3356: 3337:(8): 2514–22. 3320: 3261: 3204: 3167:(9): 1071–89. 3147: 3126:(3): 321–336. 3106: 3079: 3060:(9): 938–949. 3044: 3015:(2): 131–142. 2995: 2960: 2941:(13): 1311–2. 2925: 2883: 2832: 2774: 2759: 2726: 2660: 2633:(2): 227–236. 2617: 2582:(1): 297–307. 2565: 2564: 2562: 2559: 2558: 2557: 2550: 2547: 2546: 2545: 2535: 2521: 2505: 2499: 2493: 2487: 2475: 2472: 2463: 2460: 2404:Main article: 2401: 2398: 2373: 2370: 2340: 2337: 2288: 2285: 2240: 2237: 2232:Main article: 2229: 2226: 2224: 2221: 2220: 2219: 2201: 2196: 2191: 2184: 2181: 2180: 2179: 2174: 2169: 2162: 2159: 2158: 2157: 2152: 2147: 2142: 2137: 2132: 2125: 2122: 2117: 2114: 2102:cyclooxygenase 2089: 2086: 2084: 2081: 2080: 2079: 2076: 2073: 2072: 2071: 2066: 2055: 2054: 2053: 2050: 2047: 2044: 2041: 2038: 2030: 2027: 2026: 2025: 2024: 2023: 2022: 2021: 2018: 2013: 2008: 2002: 1997: 1986: 1985: 1984: 1983: 1982: 1980:Scott syndrome 1977: 1969: 1968: 1967: 1962: 1954: 1953: 1952: 1947: 1944: 1941: 1936: 1931: 1925: 1924: 1923: 1910: 1907: 1906: 1905: 1899: 1894: 1891: 1886: 1883: 1880: 1870: 1865: 1863:HELLP syndrome 1860: 1855: 1850: 1845: 1840: 1835: 1832: 1831: 1830: 1820: 1812: 1809: 1755:thrombocytosis 1746: 1743: 1726: 1723: 1717: 1714: 1701: 1698: 1693: 1692: 1689: 1684: 1679: 1672: 1671: 1666: 1661: 1655: 1654: 1648: 1643: 1638: 1633: 1632: 1631: 1626: 1618: 1617: 1612: 1609: 1606: 1603: 1602: 1601: 1596: 1588: 1587: 1584: 1579: 1576: 1573: 1566: 1565: 1562: 1559: 1554: 1551: 1544: 1543: 1540: 1537: 1534: 1529: 1518: 1517: 1512: 1507: 1502: 1497: 1470:Main article: 1467: 1464: 1455: 1452: 1404: 1401: 1399: 1396: 1363: 1360: 1352:polyphosphates 1319: 1316: 1229:and secreting 1222: 1219: 1157: 1154: 1130: 1127: 1094: 1091: 1079:prothrombinase 1062: 1059: 1014: 1011: 1010: 1009: 1006: 999: 978: 922:alpha granules 918:dense granules 905: 902: 866:thromboxane A2 861: 858: 856: 853: 822:also binds to 801: 798: 760:is coupled to 710: 703:, endothelial- 692: 689: 671: 668: 619: 616: 599:Main article: 595: 594: 572: 570: 563: 557: 554: 553: 552: 545: 541: 529: 528: 525: 522: 519: 516:thrombopoietin 502: 499: 495:flow cytometry 483: 480: 479: 478: 475:thromboxane A2 463: 424:Alpha granules 420: 417:microfilaments 409: 386: 383: 381: 378: 337: 334: 330:growth factors 231:megakaryocytes 152: 151: 142: 136: 135: 130: 124: 123: 118: 112: 111: 106: 100: 99: 95: 94: 91: 87: 86: 84:Megakaryocytes 81: 75: 74: 70: 69: 57:Giemsa-stained 50: 42: 41: 26: 9: 6: 4: 3: 2: 8036: 8025: 8022: 8020: 8017: 8015: 8012: 8010: 8007: 8005: 8002: 8000: 7997: 7996: 7994: 7979: 7976: 7974: 7971: 7969: 7966: 7964: 7961: 7959: 7956: 7954: 7951: 7949: 7946: 7944: 7940: 7937: 7935: 7932: 7930: 7927: 7925: 7922: 7920: 7917: 7915: 7912: 7910: 7907: 7905: 7902: 7900: 7897: 7895: 7892: 7890: 7887: 7884: 7880: 7877: 7875: 7872: 7870: 7867: 7865: 7862: 7860: 7857: 7855: 7852: 7850: 7847: 7845: 7842: 7840: 7837: 7835: 7832: 7830: 7827: 7825: 7822: 7820: 7817: 7815: 7812: 7810: 7807: 7805: 7802: 7800: 7797: 7795: 7794:Chido-Rodgers 7792: 7790: 7787: 7785: 7782: 7778: 7775: 7774: 7773: 7770: 7768: 7765: 7764: 7762: 7760: 7756: 7750: 7747: 7745: 7742: 7738: 7735: 7733: 7730: 7729: 7727: 7724: 7722: 7719: 7717: 7714: 7712: 7709: 7707: 7704: 7702: 7699: 7698: 7696: 7692: 7688: 7682: 7679: 7677: 7674: 7672: 7669: 7667: 7664: 7660: 7657: 7656: 7655: 7652: 7651: 7649: 7645: 7639: 7636: 7634: 7631: 7628: 7627:leukapheresis 7624: 7620: 7616: 7613: 7612: 7610: 7606: 7600: 7597: 7595: 7592: 7590: 7587: 7585: 7582: 7580: 7577: 7576: 7574: 7570: 7564: 7561: 7557: 7554: 7553: 7552: 7549: 7545: 7542: 7540: 7537: 7535: 7532: 7530: 7527: 7526: 7525: 7522: 7520: 7517: 7513: 7510: 7509: 7508: 7505: 7503: 7500: 7499: 7497: 7495: 7491: 7487: 7483: 7476: 7471: 7469: 7464: 7462: 7457: 7456: 7453: 7437: 7434: 7432: 7425: 7424: 7422: 7420: 7416: 7410: 7407: 7405: 7402: 7400: 7397: 7396: 7394: 7392: 7388: 7382: 7379: 7377: 7374: 7372: 7369: 7368: 7366: 7364: 7360: 7354: 7351: 7349: 7346: 7345: 7343: 7341: 7337: 7334: 7332: 7328: 7322: 7319: 7317: 7310: 7308: 7301: 7299: 7296: 7294: 7291: 7289: 7286: 7284: 7281: 7279: 7276: 7274: 7271: 7270: 7268: 7266: 7262: 7256: 7253: 7251: 7248: 7246: 7243: 7241: 7238: 7236: 7233: 7231: 7228: 7227: 7225: 7223: 7219: 7209: 7206: 7204: 7201: 7198: 7194: 7190: 7187: 7185: 7182: 7180: 7177: 7175: 7172: 7170: 7167: 7166: 7164: 7162: 7158: 7152: 7149: 7147: 7144: 7143: 7141: 7139: 7133: 7127: 7124: 7122: 7119: 7117: 7114: 7112: 7109: 7107: 7104: 7102: 7101:Prekallikrein 7099: 7097: 7094: 7092: 7089: 7088: 7086: 7084: 7078: 7072: 7069: 7066: 7063: 7061: 7057: 7054: 7051: 7048: 7046: 7043: 7041: 7037: 7034: 7032: 7028: 7026: 7023: 7022: 7020: 7018: 7012: 7009: 7007: 7003: 6999: 6992: 6987: 6985: 6980: 6978: 6973: 6972: 6969: 6955: 6952: 6951: 6950: 6947: 6945: 6942: 6940: 6937: 6936: 6934: 6930: 6920: 6919:Myelomonocyte 6917: 6913: 6910: 6908: 6905: 6903: 6900: 6899: 6897: 6896: 6894: 6890: 6884: 6881: 6879: 6876: 6874: 6871: 6870: 6868: 6864: 6858: 6855: 6853: 6850: 6848: 6845: 6844: 6842: 6840: 6836: 6830: 6829:Megakaryocyte 6827: 6825: 6822: 6820: 6817: 6815: 6812: 6811: 6809: 6807: 6803: 6791: 6788: 6787: 6786: 6783: 6779: 6776: 6774: 6771: 6769: 6766: 6765: 6763: 6762: 6760: 6756: 6748: 6745: 6743: 6740: 6738: 6735: 6734: 6733: 6730: 6728: 6725: 6723: 6720: 6718: 6715: 6713: 6710: 6708: 6707:Kupffer cells 6705: 6703: 6700: 6699: 6697: 6695: 6691: 6688: 6686: 6682: 6674: 6671: 6670: 6669: 6666: 6662: 6659: 6658: 6657: 6654: 6650: 6647: 6646: 6645: 6642: 6640: 6637: 6635: 6632: 6630: 6627: 6626: 6624: 6622: 6618: 6615: 6613: 6609: 6599: 6596: 6595: 6593: 6589: 6573: 6570: 6568: 6565: 6563: 6560: 6559: 6558: 6555: 6554: 6551: 6543: 6540: 6538: 6535: 6534: 6533: 6530: 6529: 6526: 6523: 6521: 6517: 6505: 6502: 6500: 6497: 6496: 6495: 6492: 6491: 6488: 6480: 6477: 6475: 6474:Metamyelocyte 6472: 6470: 6467: 6465: 6462: 6460: 6457: 6456: 6455: 6452: 6451: 6448: 6445: 6443: 6439: 6436: 6433: 6428: 6424: 6421: 6419: 6418:Hematopoiesis 6415: 6411: 6403: 6398: 6396: 6391: 6389: 6384: 6383: 6380: 6369: 6365: 6360: 6355: 6351: 6347: 6343: 6339: 6335: 6328: 6320: 6316: 6313:(23): 643–5. 6312: 6308: 6304: 6297: 6289: 6285: 6278: 6270: 6269: 6262: 6254: 6250: 6245: 6240: 6236: 6232: 6228: 6221: 6213: 6209: 6205: 6201: 6197: 6193: 6189: 6182: 6174: 6170: 6166: 6162: 6158: 6154: 6150: 6143: 6135: 6131: 6127: 6123: 6116: 6108: 6104: 6100: 6096: 6092: 6088: 6084: 6080: 6073: 6065: 6064: 6056: 6047: 6039: 6035: 6031: 6027: 6023: 6019: 6015: 6011: 6007: 6003: 5996: 5988: 5984: 5979: 5974: 5970: 5966: 5962: 5958: 5954: 5947: 5939: 5935: 5930: 5925: 5921: 5917: 5913: 5906: 5898: 5894: 5889: 5884: 5880: 5876: 5872: 5868: 5864: 5860: 5853: 5845: 5841: 5837: 5831: 5827: 5823: 5819: 5815: 5808: 5801: 5797: 5794: 5789: 5781: 5777: 5773: 5769: 5762: 5754: 5750: 5746: 5740: 5736: 5733:AABB (2009). 5729: 5721: 5717: 5713: 5709: 5705: 5701: 5697: 5693: 5692:Vox Sanguinis 5686: 5678: 5674: 5670: 5666: 5662: 5658: 5654: 5650: 5642: 5634: 5630: 5626: 5622: 5618: 5614: 5610: 5606: 5599: 5591: 5587: 5582: 5577: 5573: 5569: 5565: 5558: 5550: 5546: 5542: 5536: 5532: 5528: 5522: 5514: 5510: 5505: 5500: 5496: 5492: 5488: 5484: 5480: 5472: 5464: 5460: 5456: 5450: 5446: 5439: 5431: 5427: 5422: 5417: 5413: 5409: 5405: 5398: 5390: 5386: 5382: 5378: 5373: 5368: 5364: 5360: 5356: 5349: 5341: 5337: 5332: 5327: 5323: 5319: 5315: 5309: 5301: 5297: 5292: 5287: 5283: 5279: 5275: 5271: 5267: 5260: 5252: 5248: 5243: 5238: 5234: 5230: 5226: 5222: 5218: 5211: 5203: 5199: 5194: 5189: 5185: 5181: 5177: 5173: 5169: 5162: 5154: 5150: 5146: 5142: 5138: 5134: 5130: 5126: 5119: 5111: 5107: 5103: 5099: 5095: 5091: 5087: 5083: 5082:Blood Reviews 5076: 5068: 5064: 5059: 5054: 5050: 5046: 5042: 5038: 5034: 5027: 5019: 5015: 5011: 5007: 5003: 4999: 4992: 4977: 4970: 4964: 4956: 4952: 4948: 4944: 4940: 4936: 4929: 4921: 4917: 4913: 4909: 4905: 4901: 4894: 4885: 4881: 4875: 4873: 4864: 4860: 4856: 4852: 4847: 4842: 4838: 4834: 4830: 4823: 4821: 4819: 4817: 4815: 4806: 4800: 4796: 4795: 4787: 4779: 4773: 4769: 4768: 4760: 4750: 4742: 4738: 4734: 4730: 4726: 4719: 4711: 4707: 4703: 4697: 4693: 4689: 4682: 4667: 4661: 4659: 4650: 4646: 4642: 4636: 4632: 4631: 4623: 4621: 4612: 4608: 4604: 4600: 4596: 4592: 4585: 4577: 4573: 4569: 4565: 4561: 4557: 4549: 4541: 4537: 4533: 4529: 4525: 4521: 4517: 4513: 4509: 4505: 4501: 4494: 4486: 4482: 4477: 4472: 4468: 4464: 4460: 4453: 4451: 4442: 4438: 4433: 4428: 4424: 4420: 4416: 4412: 4408: 4404: 4400: 4393: 4385: 4381: 4376: 4371: 4367: 4363: 4359: 4351: 4343: 4339: 4334: 4329: 4325: 4321: 4317: 4313: 4309: 4302: 4294: 4290: 4285: 4280: 4276: 4272: 4268: 4264: 4260: 4253: 4245: 4241: 4237: 4233: 4229: 4225: 4221: 4217: 4213: 4209: 4202: 4194: 4190: 4185: 4180: 4176: 4172: 4168: 4161: 4153: 4149: 4145: 4141: 4137: 4133: 4126: 4118: 4114: 4109: 4104: 4100: 4096: 4092: 4085: 4078: 4072: 4068: 4064: 4060: 4053: 4045: 4041: 4036: 4031: 4027: 4023: 4019: 4012: 4010: 4008: 3999: 3995: 3990: 3985: 3981: 3977: 3973: 3966: 3958: 3954: 3950: 3946: 3942: 3938: 3934: 3930: 3922: 3914: 3910: 3905: 3900: 3896: 3892: 3888: 3881: 3873: 3869: 3865: 3861: 3857: 3853: 3849: 3845: 3838: 3830: 3826: 3821: 3816: 3812: 3808: 3804: 3800: 3796: 3789: 3787: 3778: 3774: 3770: 3766: 3759: 3751: 3747: 3743: 3739: 3732: 3724: 3720: 3715: 3710: 3706: 3702: 3698: 3691: 3683: 3679: 3674: 3669: 3665: 3661: 3657: 3653: 3649: 3642: 3634: 3630: 3626: 3622: 3617: 3612: 3608: 3604: 3600: 3593: 3585: 3581: 3576: 3571: 3567: 3563: 3559: 3555: 3551: 3544: 3536: 3532: 3528: 3524: 3520: 3516: 3512: 3508: 3501: 3493: 3489: 3485: 3479: 3475: 3471: 3467: 3460: 3452: 3448: 3444: 3440: 3436: 3432: 3428: 3424: 3420: 3416: 3409: 3401: 3397: 3393: 3389: 3384: 3379: 3375: 3371: 3367: 3360: 3352: 3348: 3344: 3340: 3336: 3332: 3324: 3316: 3312: 3307: 3302: 3297: 3292: 3288: 3284: 3280: 3276: 3272: 3265: 3257: 3253: 3249: 3245: 3240: 3235: 3231: 3227: 3224:(1): 017001. 3223: 3219: 3215: 3208: 3200: 3196: 3191: 3186: 3182: 3178: 3174: 3170: 3166: 3162: 3158: 3151: 3143: 3139: 3134: 3129: 3125: 3121: 3117: 3110: 3102: 3098: 3094: 3090: 3083: 3075: 3071: 3067: 3063: 3059: 3055: 3048: 3040: 3036: 3031: 3026: 3022: 3018: 3014: 3010: 3006: 2999: 2991: 2987: 2983: 2979: 2975: 2971: 2964: 2956: 2952: 2948: 2944: 2940: 2936: 2929: 2921: 2917: 2913: 2909: 2905: 2901: 2894: 2892: 2890: 2888: 2879: 2872: 2866: 2858: 2854: 2850: 2843: 2836: 2828: 2824: 2820: 2816: 2811: 2806: 2802: 2798: 2794: 2787: 2785: 2783: 2781: 2779: 2770: 2766: 2762: 2756: 2752: 2745: 2743: 2741: 2739: 2737: 2735: 2733: 2731: 2722: 2718: 2713: 2708: 2704: 2700: 2696: 2692: 2688: 2684: 2680: 2676: 2672: 2664: 2656: 2652: 2648: 2644: 2640: 2636: 2632: 2628: 2621: 2613: 2609: 2605: 2601: 2597: 2593: 2589: 2585: 2581: 2577: 2570: 2566: 2556: 2553: 2552: 2543: 2539: 2536: 2533: 2529: 2525: 2524:William Osler 2522: 2519: 2515: 2514: 2509: 2506: 2503: 2500: 2497: 2494: 2491: 2488: 2485: 2481: 2478: 2477: 2471: 2469: 2468:B lymphocytes 2459: 2457: 2453: 2449: 2445: 2441: 2437: 2433: 2429: 2425: 2420: 2418: 2414: 2407: 2397: 2393: 2391: 2385: 2383: 2378: 2366: 2362: 2357: 2353: 2351: 2345: 2336: 2333: 2329: 2323: 2321: 2317: 2313: 2308: 2306: 2302: 2293: 2284: 2282: 2278: 2274: 2270: 2266: 2262: 2258: 2254: 2250: 2245: 2235: 2218: 2214: 2210: 2206: 2202: 2200: 2197: 2195: 2192: 2190: 2187: 2186: 2178: 2175: 2173: 2170: 2168: 2165: 2164: 2156: 2153: 2151: 2148: 2146: 2143: 2141: 2138: 2136: 2133: 2131: 2128: 2127: 2121: 2113: 2111: 2107: 2103: 2099: 2095: 2077: 2074: 2070: 2067: 2065: 2062: 2061: 2059: 2056: 2051: 2048: 2045: 2042: 2039: 2036: 2035: 2033: 2032: 2019: 2017: 2014: 2012: 2009: 2006: 2003: 2001: 1998: 1996: 1993: 1992: 1990: 1989: 1987: 1981: 1978: 1976: 1973: 1972: 1970: 1966: 1963: 1961: 1958: 1957: 1955: 1951: 1948: 1945: 1942: 1940: 1937: 1935: 1932: 1929: 1928: 1926: 1922: 1919: 1918: 1916: 1915: 1913: 1912: 1903: 1900: 1898: 1895: 1892: 1890: 1887: 1884: 1881: 1878: 1874: 1871: 1869: 1866: 1864: 1861: 1859: 1856: 1854: 1851: 1849: 1846: 1844: 1841: 1839: 1836: 1833: 1829: 1826: 1825: 1824: 1821: 1818: 1815: 1814: 1808: 1805: 1803: 1799: 1795: 1791: 1787: 1783: 1778: 1776: 1772: 1768: 1764: 1760: 1756: 1752: 1742: 1740: 1736: 1732: 1722: 1713: 1711: 1707: 1697: 1690: 1688: 1685: 1683: 1677: 1674: 1673: 1670: 1667: 1665: 1660: 1657: 1656: 1653: 1649: 1647: 1644: 1642: 1639: 1637: 1634: 1630: 1627: 1625: 1622: 1621: 1620: 1619: 1616: 1613: 1610: 1607: 1604: 1600: 1597: 1595: 1592: 1591: 1590: 1589: 1585: 1583: 1580: 1577: 1574: 1571: 1568: 1567: 1563: 1560: 1558: 1555: 1552: 1549: 1546: 1545: 1541: 1538: 1535: 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938: 935:— containing 934: 931: 930: 929: 927: 923: 919: 910: 901: 899: 895: 891: 887: 883: 879: 875: 871: 867: 852: 850: 846: 841: 837: 833: 829: 825: 821: 820:Tissue factor 817: 815: 811: 807: 797: 795: 791: 787: 784: 780: 776: 772: 768: 763: 759: 755: 750: 748: 744: 740: 736: 732: 728: 724: 719: 717: 713: 706: 702: 698: 685: 681: 676: 667: 665: 660: 658: 654: 650: 646: 642: 640: 636: 632: 628: 624: 615: 607: 602: 591: 588:November 2022 582: 578: 577: 571: 562: 561: 550: 546: 539: 538: 533: 526: 523: 520: 517: 513: 512: 507: 498: 496: 492: 487: 476: 472: 468: 467:megakaryocyte 464: 461: 457: 453: 449: 445: 441: 437: 433: 429: 425: 421: 418: 414: 410: 408: 404: 400: 396: 395:glycoproteins 392: 391: 390: 377: 375: 371: 367: 363: 359: 355: 350: 347: 343: 333: 331: 327: 322: 320: 316: 315: 310: 305: 301: 297: 296:platelet plug 293: 289: 285: 281: 280: 275: 271: 263: 258: 254: 252: 248: 244: 240: 236: 232: 228: 224: 220: 216: 212: 208: 204: 200: 197: 190: 186: 183: 180: 173: 169: 166: 165:Ancient Greek 162: 158: 147: 141: 137: 134: 131: 129: 125: 122: 119: 117: 113: 110: 107: 105: 101: 96: 92: 88: 85: 82: 80: 76: 71: 66: 62: 58: 54: 51:Image from a 48: 43: 38: 33: 19: 8009:Cell biology 7506: 7436:D-Dimer (DD) 7419:Fibrinolysis 7307:-Antiplasmin 7029: 6878:Phagocytosis 6847:Reticulocyte 6805: 6621:Granulocytes 6572:Reticulocyte 6464:Promyelocyte 6427:Myelopoiesis 6341: 6337: 6327: 6310: 6306: 6296: 6287: 6283: 6277: 6267: 6261: 6237:(3): 251–8. 6234: 6230: 6220: 6195: 6191: 6181: 6156: 6152: 6142: 6125: 6121: 6115: 6082: 6078: 6072: 6062: 6055: 6046: 6005: 6001: 5995: 5960: 5956: 5946: 5919: 5915: 5905: 5870: 5866: 5852: 5817: 5807: 5788: 5774:(1): 82–88. 5771: 5767: 5761: 5734: 5728: 5695: 5691: 5685: 5655:(6): 911–9. 5652: 5648: 5641: 5608: 5604: 5598: 5571: 5567: 5557: 5530: 5521: 5486: 5482: 5471: 5444: 5438: 5414:(1): 15–25. 5411: 5407: 5397: 5365:(4): 383–8. 5362: 5358: 5348: 5321: 5317: 5308: 5276:(7): 296–9. 5273: 5269: 5259: 5224: 5220: 5210: 5175: 5171: 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Retrieved 4629: 4594: 4590: 4584: 4559: 4555: 4548: 4507: 4503: 4493: 4466: 4462: 4406: 4402: 4392: 4365: 4361: 4350: 4315: 4311: 4301: 4266: 4262: 4252: 4211: 4207: 4201: 4174: 4170: 4160: 4135: 4131: 4125: 4098: 4094: 4084: 4058: 4052: 4025: 4021: 3982:(1): 75–83. 3979: 3975: 3965: 3932: 3928: 3921: 3894: 3890: 3880: 3847: 3843: 3837: 3805:(5): 854–5. 3802: 3798: 3768: 3764: 3758: 3741: 3737: 3731: 3704: 3700: 3690: 3658:(1): 53–58. 3655: 3651: 3641: 3606: 3602: 3592: 3557: 3553: 3543: 3510: 3506: 3500: 3465: 3459: 3418: 3414: 3408: 3373: 3369: 3359: 3334: 3330: 3323: 3278: 3274: 3264: 3221: 3217: 3207: 3164: 3160: 3150: 3123: 3119: 3109: 3095:(3): 501–7. 3092: 3088: 3082: 3057: 3053: 3047: 3012: 3008: 2998: 2973: 2969: 2963: 2938: 2934: 2928: 2906:(6): 561–9. 2903: 2899: 2848: 2835: 2803:(2): 103–8. 2800: 2796: 2750: 2678: 2674: 2663: 2630: 2626: 2620: 2579: 2575: 2569: 2541: 2538:James Wright 2531: 2530:and a blood 2527: 2517: 2511: 2502:Max Schultze 2496:Lionel Beale 2465: 2421: 2417:phagocytosis 2409: 2406:Wound repair 2400:Wound repair 2394: 2386: 2379: 2375: 2346: 2342: 2324: 2309: 2298: 2277:coagulopathy 2242: 2194:Eptifibatide 2167:Desmopressin 2119: 2091: 2083:Pharmacology 1848:Dengue fever 1838:Chemotherapy 1823:Splenomegaly 1806: 1802:tissue death 1779: 1748: 1728: 1719: 1703: 1696: 1686: 1681: 1668: 1663: 1651: 1645: 1640: 1635: 1614: 1581: 1556: 1531: 1522:P2Y receptor 1475: 1457: 1441: 1425: 1406: 1385: 1369: 1365: 1321: 1289: 1285:covercytosis 1284: 1281: 1250: 1243: 1224: 1221:Inflammation 1207: 1197:(PAMPs), or 1183: 1179:bactericidal 1173:by means of 1159: 1151: 1132: 1123: 1119: 1104: 1083: 1064: 1051: 1046: 1043:early spread 1042: 1038: 1034: 1030: 1026: 1016: 915: 897: 870:prostacyclin 863: 818: 805: 803: 751: 735:prostacyclin 720: 701:nitric oxide 696: 694: 661: 643: 635:prostacyclin 631:nitric oxide 621: 612: 585: 574: 549:phagocytosis 488: 485: 448:dense bodies 413:microtubules 388: 373: 369: 365: 361: 357: 353: 351: 345: 341: 339: 323: 319:wound repair 318: 312: 308: 291: 287: 277: 267: 223:cell nucleus 215:blood vessel 195: 192: 185: 178: 175: 168: 161:thrombocytes 160: 156: 155: 109:thrombocytus 108: 8014:Human cells 7767:Blood types 7666:Coombs test 7502:Whole blood 7273:Plasminogen 7208:Factor XIII 7126:Factor VIII 6732:giant cells 6722:Osteoclasts 6702:Histiocytes 6694:Macrophages 6504:Promonocyte 6159:(1): 1–42. 6063:Lord Lister 5649:Transfusion 5605:Transfusion 5568:Transfusion 3771:(4): 3–16. 2462:Non-mammals 2430:agent; and 2428:chemotactic 2305:Blood Banks 2261:clopidogrel 2239:Indications 2228:Transfusion 2213:eltrombopag 2209:romiplostim 2172:Factor VIIa 2155:Ticlopidine 2140:Clopidogrel 2124:Oral agents 1914:Congenital 1526:Clopidogrel 1505:Epinephrine 1444:blood smear 1403:Measurement 1187:neutrophils 1093:Aggregation 1055:muscle cell 953:fibronectin 926:chemotactic 898:aggregation 828:coagulation 786:antagonists 779:Clopidogrel 680:erythrocyte 627:endothelium 501:Development 440:fibronectin 432:factor VIII 342:thrombocyte 292:aggregation 274:endothelium 239:vertebrates 235:bone marrow 98:Identifiers 61:blood smear 59:peripheral 7993:Categories 7579:Blood bank 7151:Factor VII 7106:Kallikrein 7096:Bradykinin 6656:Eosinophil 6639:Neutrophil 6629:Myeloblast 6567:Normoblast 6459:Myeloblast 5859:Mustard JF 5574:(1): 3–6. 5088:: 100784. 4982:2017-03-27 4672:2022-11-18 2797:IUBMB Life 2561:References 2350:bacteremia 2320:buffy coat 2312:centrifuge 2287:Collection 2269:hemorrhage 2217:argatroban 2205:oprelvekin 2150:Ticagrelor 2135:Cilostazol 2108:, another 2096:(NSAIDS). 2078:Congenital 2043:Malignancy 1843:Babesiosis 1782:thrombosis 1759:congenital 1650:Normal or 1515:Ristocetin 1381:ecchymoses 1328:antibodies 1261:E-selectin 1235:chemokines 1227:leukocytes 1175:exocytosis 1115:fibrinogen 1107:GPIIb/IIIa 1067:scramblase 965:fibrinogen 937:P-selectin 894:GPIIb/IIIa 874:eicosanoid 849:fibrinogen 824:factor VII 739:prostanoid 727:cyclic AMP 691:Inhibition 670:Activation 601:Hemostasis 556:Hemostasis 450:, contain 436:fibrinogen 407:GPIIb/IIIa 380:Morphology 374:thrombosis 366:thrombosis 309:retraction 288:activation 270:hemostasis 247:amphibians 219:blood clot 163:(from 7784:Augustine 7728:reaction 7726:Hemolytic 7615:Apheresis 7507:Platelets 7427:Plasmin-α 7288:Urokinase 7121:Factor IX 7116:Factor XI 6939:Phagocyte 6806:Platelets 6785:Monoblast 6717:Microglia 6685:Monocytes 6668:Mast cell 6634:Band cell 6499:Monoblast 6479:Band cell 6469:Myelocyte 6128:: 47–63. 5844:844452405 5753:630715051 5483:Blood Adv 5463:756764486 5125:Platelets 5110:229178137 4920:1551-8779 4855:1750-1172 4754:38950624. 4710:162572838 4692:Platelets 4540:206544569 4059:Platelets 3625:1538-7933 2976:: 84–94. 2865:cite book 2769:820818942 2751:Platelets 2703:1476-4687 2518:piastrine 2361:apheresis 2257:epidurals 2223:Therapies 2199:Tirofiban 2189:Abciximab 2145:Prasugrel 2106:Ibuprofen 2034:Reactive 1988:Acquired 1771:neoplasms 1763:cytokines 1745:Disorders 1710:photocell 1652:decreased 1646:Decreased 1641:Decreased 1636:Decreased 1557:Decreased 1532:Decreased 1373:petechiae 1348:proteases 1344:defensins 1340:opsonised 1292:synovitis 1231:cytokines 1213:(DIC) or 1191:monocytes 1171:pathogens 1167:amebocyte 1003:lysosomes 997:serotonin 737:binds to 684:leukocyte 664:GP1b-IX-V 460:serotonin 399:GPIb/IX/V 385:Structure 340:The term 326:cytokines 227:cytoplasm 157:Platelets 79:Precursor 40:Platelets 7909:Lutheran 7814:Dombrock 7599:ISBT 128 7174:Factor V 7169:Factor X 6912:CFU-GEMM 6673:CFU-Mast 6649:CFU-Baso 6644:Basophil 6432:CFU-GEMM 6368:84877594 6290:: 421–5. 6253:16643426 6212:37267098 6173:84919090 5987:21816834 5938:23963043 5796:Archived 5780:16537051 5720:38392712 5712:23134556 5677:23169569 5669:15934989 5633:24109912 5625:15157255 5549:53010679 5513:31770441 5430:19775301 5340:15809457 5300:19539528 5251:20194899 5202:22262771 5145:17654302 5102:33317862 5067:35167650 5018:35859143 4955:19408190 4863:20822539 4649:21250105 4532:23224555 4485:29350833 4441:20110505 4384:29195076 4342:30877311 4293:16258538 4244:21334521 4193:14500287 4152:15324742 4117:21435167 4044:23590652 3957:41983626 3949:16412022 3913:24297866 3872:28765989 3829:20688968 3723:19143843 3682:31534882 3633:23406164 3584:16455953 3535:41764516 3527:15852226 3492:22130718 3392:17382885 3351:10753829 3315:29518073 3256:44626047 3248:23288415 3074:18753650 3039:32145082 2990:34924312 2955:29614158 2920:27866916 2827:12054259 2819:16036569 2721:28329764 2655:42595581 2647:24499183 2612:45051688 2549:See also 2432:TGF beta 2372:Delivery 2203:Others: 1798:ischemia 1794:thrombus 1510:Collagen 1448:clumping 1334:through 1241:(PDGF). 845:factor V 832:thrombin 806:collagen 790:PI3K/Akt 697:inhibits 649:collagen 623:Thrombus 618:Adhesion 428:factor V 370:thrombus 362:thrombus 354:thrombus 279:adhesion 211:bleeding 179:thrómbos 90:Function 7948:Scianna 7834:Gerbich 7737:delayed 7608:Methods 7278:Plasmin 6814:CFU-Meg 6661:CFU-Eos 6591:General 6107:5742616 6099:6029960 6038:4269208 6030:5686175 6010:Bibcode 5978:3186337 5897:4957257 5888:2106759 5590:1731433 5504:6880896 5389:3229482 5381:6411052 5291:3116138 5242:2867258 5193:3335383 5153:7923694 5058:9164741 4611:8951776 4576:1585777 4512:Bibcode 4504:Science 4432:2927861 4411:Bibcode 4403:Science 4333:6603966 4284:2908083 4236:8662511 4216:Bibcode 4208:Science 3998:1702031 3864:1455249 3820:2918337 3777:4107203 3750:3324323 3673:6750022 3575:1895285 3451:4305207 3443:3495737 3423:Bibcode 3400:7492885 3306:5860797 3283:Bibcode 3226:Bibcode 3190:1334946 3169:Bibcode 3142:1097000 3101:1154309 3030:7384010 2712:5663284 2683:Bibcode 2604:4508929 2584:Bibcode 2513:in vivo 2474:History 2413:plasmin 2339:Storage 2249:surgery 2130:Aspirin 2098:Aspirin 2016:Malaria 1853:Onyalai 1731:PFA-100 1725:PFA-100 1691:Normal 1676:Aspirin 1669:Partial 1586:Normal 1572:defect 1564:Normal 1550:defect 1542:Normal 1377:purpura 1336:FcγRIIA 1203:NETosis 993:calcium 581:discuss 469:smooth 456:calcium 262:ligands 233:of the 172:θρόμβος 121:D001792 73:Details 7859:Indian 7804:Cromer 7799:Colton 7524:Plasma 7065:GPIIIa 6944:Plasma 6902:CFU-GM 6778:CFU-DL 6442:CFU-GM 6410:plasma 6366:  6251:  6210:  6171:  6105:  6097:  6036:  6028:  6002:Nature 5985:  5975:  5936:  5895:  5885:  5842:  5832:  5778:  5751:  5741:  5718:  5710:  5675:  5667:  5631:  5623:  5588:  5547:  5537:  5511:  5501:  5461:  5451:  5428:  5387:  5379:  5338:  5298:  5288:  5249:  5239:  5200:  5190:  5151:  5143:  5108:  5100:  5065:  5055:  5016:  4953:  4918:  4861:  4853:  4801:  4774:  4708:  4698:  4647:  4637:  4609:  4574:  4538:  4530:  4483:  4439:  4429:  4382:  4340:  4330:  4291:  4281:  4242:  4234:  4191:  4150:  4115:  4073:  4042:  3996:  3955:  3947:  3911:  3870:  3862:  3827:  3817:  3775:  3748:  3721:  3680:  3670:  3631:  3623:  3582:  3572:  3533:  3525:  3490:  3480:  3449:  3441:  3415:Nature 3398:  3390:  3349:  3313:  3303:  3254:  3246:  3199:786400 3197:  3187:  3140:  3099:  3072:  3037:  3027:  2988:  2953:  2918:  2825:  2817:  2767:  2757:  2719:  2709:  2701:  2675:Nature 2653:  2645:  2610:  2602:  2542:plates 2532:plaque 2450:, and 2363:at an 2328:cancer 2011:Cancer 2000:Asthma 1904:(VITT) 1739:uremia 1687:Absent 1611:Normal 1608:Normal 1605:Normal 1578:Normal 1575:Normal 1561:Normal 1553:Normal 1539:Normal 1536:Normal 1269:VCAM-1 1267:, and 1265:ICAM-1 1143:sepsis 1075:tenase 1047:spread 1035:spread 995:, and 967:, and 884:, and 725:via a 723:efflux 707:, and 705:ADPase 637:, and 544:timer. 458:, and 304:fibrin 241:(e.g. 7978:Other 7904:Lewis 7894:Knops 7874:KANNO 7819:Duffy 7809:Diego 7732:acute 7647:Tests 7060:GPIIb 7045:GP1BB 7040:GP1BA 6932:Other 6892:Other 6857:CFU-E 6758:Other 6364:S2CID 6208:S2CID 6169:S2CID 6103:S2CID 6034:S2CID 5957:Blood 5916:Blood 5716:S2CID 5673:S2CID 5629:S2CID 5385:S2CID 5221:Blood 5172:Blood 5149:S2CID 5106:S2CID 5037:Blood 4972:(PDF) 4906:(2). 4839:(1). 4536:S2CID 4240:S2CID 3976:Blood 3953:S2CID 3891:Blood 3868:S2CID 3799:Blood 3554:Blood 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Index

Platelet aggregation
Platelet (disambiguation)

light microscope
Giemsa-stained
blood smear
red blood cells
Precursor
Megakaryocytes
Latin
MeSH
D001792
FMA
62851
Anatomical terms of microanatomy
edit on Wikidata
Ancient Greek
θρόμβος
κύτος
blood
coagulation factors
bleeding
blood vessel
blood clot
cell nucleus
cytoplasm
megakaryocytes
bone marrow
vertebrates
birds

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