The blood coagulation which you are referring to has several stages and types. The main cells involved directly are thrombocytes, while endothelial cells etc may also play a role.There are also...
The blood cell involved in clotting is the platelet. In all mammals, there is a cellular and a protein component. The protein component is known as coagulation factor.
First it should be clear that blood can't clot only in the presence of a anticoagulant or/and in the absence of clotting factors. if anticoagulant is not there in the vicinity of blood then blood...