Q.

Blood fails to clot white flowing in the blood vessel because of the presence of -

A. Hepatin
B. Prothrombin
C. liaemoglobin
D. Iltrudin
Answer» A. Hepatin
Explanation: Heparin also known as un- fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
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