platelet

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platelet:

see blood clottingblood clotting,
process by which the blood coagulates to form solid masses, or clots. In minor injuries, small oval bodies called platelets, or thrombocytes, tend to collect and form plugs in blood vessel openings.
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Platelet

 

(also thrombocyte), a formed element found in the blood of vertebrate animals and man that plays an important role in blood coagulation. The platelets of vertebrate animals (except mammals) are small ovoid cells with a solid nucleus and weakly basophilic cytoplasm. In mammals, including man, platelets are anuclear bodies 2–5 µ in diameter. The platelets normally number about 250,000–350,000 per cubic mm of blood. They have granules containing serotonin and substances involved in blood coagulation, as well as mitochondria, microtubules, glycogen granules, and sometimes ribosomes. In mammals, platelets originate in the blood-forming organs when fragments of the cytoplasm of megakaryocytes separate from the megakaryocytes. The life-span of the platelets of mammals, including man, is about five to nine days.

REFERENCE

Markosian, A. A. Fiziologiia trombotsitov. Leningrad, 1970.

platelet

[′plāt·lət]
(histology)
(hydrology)
A small ice crystal which, when united with other such crystals, forms a layer of floating ice, especially sea ice, and serves as seed crystals for further thickening of the ice cover.

platelet

a minute cell occurring in the blood of vertebrates and involved in clotting of the blood
References in periodicals archive ?
Waander van Heerde and colleagues at the Department of Hematology at Radboud University Nijmegen Medical Center in the Netherlands, will use their C6 system to determine whether flow cytometry can aid in the often-difficult classification of blood platelet disorders in combination with SELDI-TOF MS (surface enhanced laser desorption/ionization time-of-flight mass spectrometry).
Cypress Bioscience develops and markets medical devices and therapeutics for the treatment of certain types of immune disorders and is engaged in the development of state-of-the-art therapeutic agents for the treatment of blood platelet disorders.
develops and markets medical devices and therapeutics for the treatment of certain types of immune disorders and is engaged in the development of novel therapeutic agents for the treatment of blood platelet disorders.