When the intima of a blood vessel is disrupted, as happens after a cut or the rupture of an atherosclerotic plaque, subendothelial collagen and von Willebrand factor are exposed to circulating blood.
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- 当血管内破裂时,血小板就会黏附、活化、聚集。动脉粥样硬化斑块切开或破裂,内皮下胶原和vWF暴露于循环血液时,也是如此。