Platelet Microparticles
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One of the responses of activated platelets to certain stimuli is the shedding of microparticles. Microparticles released from platelets (PMPs) may play a role in the normal hemostatic response to vascular injury, as these particles exhibit prothrombinase activity (1 ). It is also possible that local generation of PMPs in small atherosclerotic arteries or arterioles may promote acute arterial occlusion by providing and expanding a catalytic surface for the coagulation cascade.
