title: Activation time of blood platelets.
abstract: Blood platelets react rapidly in their hemostatic function. Determination of the reaction or activation time of individual platelets is difficult because it requires that physical and/or chemical effectors of activation are nonlimiting. Analysis of experimental conditions shows that the best estimate of mean activation time comes from in vivo measurements. Thus, the constancy of height-to-length ratio of a growing thrombus, and its change with flow rate, provide additional evidence for the activation time hypothesis.
mesh_terms: D000818:Animals; D001792:Blood Platelets / Q000502:physiology*; D006801:Humans; D010973:Platelet Adhesiveness; D010974:Platelet Aggregation; D013918:Thrombin Time