part of part of in taxon has primary input platelet cell activation blood coagulation platelet activation Reactome:R-HSA-392170 biological_process Reactome:R-HSA-76002 GO:0030168 A series of progressive, overlapping events triggered by exposure of the platelets to subendothelial tissue. These events include shape change, adhesiveness, aggregation, and release reactions. When carried through to completion, these events lead to the formation of a stable hemostatic plug. Reactome:R-HSA-418592 blood coagulation, platelet activation Reactome:R-HSA-392023 Vertebrata <vertebrates>