alpha granules

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α gran·ules

large, rodlike, or filamentous granules found in several types of cells, especially platelets, where they are the most numerous type of granule; contain secretory proteins, including fibrinogen, fibronectin, fibrospondin, von Willebrand factor (collectively known as adhesive proteins) and other proteins (for example, platelet factor 4, platelet-derived growth factor, coagulation factor V).
References in periodicals archive ?
GMP-140, a platelet alpha-granule membrane protein, is also synthesized by vascular endothelial cells and is localized in Weibel-Palade bodies.
Platelet alpha-granule contents play wide-ranging and important roles at the site of acute injury, such as provision of coagulation factors, promotion of leukocyte chemotaxis and wound healing, enhancement of alloimmune responses, and suppression of bacterial growth.
Aspirin does not inhibit adenosine diphosphate-induced platelet alpha-granule release.

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