Blood platelets.
D000818:Animals; D001777:Blood Coagulation; D001792:Blood Platelets / Q000502:physiology* / Q000648:ultrastructure; D002462:Cell Membrane / Q000648:ultrastructure; D006801:Humans; D010974:Platelet Aggregation; D013917:Thrombin / Q000378:metabolism
D013917:Thrombin