Fibrinogen is a clotting factor present in blood plasma. But our blood does not clot in the blood vessels. This is because of the anticoagulant present in the blood called_______
Mark the pair of substances among the following which is essential for coagulation of blood. (a) heparin and calcium ios (b) calcium ions and platelet factors (c) oxalates and citrates (d) platelet factors and heparin