A cell activation process that occurs in thrombocytes and consists of a series of progressive, overlapping events including shape change, adhesiveness, and aggregation, which, when carried through to completion, lead to the formation of a stable hemostatic plug. Thrombocytes are nucleated cells found in non-mammalian vertebrates and are involved in hemostasis. They are the functional equivalent of the non-nucleated platelets found in mammals.
blood coagulation, thrombocyte activation