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News in Physiological Sciences, Vol 3, 57-61, Copyright © 1988 by International Union of Physiological Sciences
ARTICLES |
RFA Zwaal
The membrane phospholipids of circulating blood platelets and red cells are asymmetrically arranged with virtually all phosphatidylserine on the inside. Stimulation of platelets by a variety of agents causes redistribution of the phospholipids with phosphatidylserine appearing on the outside. This contributes to a charged surface where local clotting reactions are greatly accelerated. Phospholipids breaking off from sickled red cells contribute similarly to intravascular clotting in the crisis phase of sickle cell disease.
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