The grouping of blood is based on substances called

A. Antibodies

B. Antigens

C. Antitoxin

D. Enzymes

Answer: Option B

Solution(By Examveda Team)

The red blood corpuscles or erythrocytes usually carry antigens and there are two types of antigens. The A group persons have antigen A in their red corpuscles and the B group have antigen B in their red corpuscles. The AB group person have both antigen A and antigen B in their erythrocytes. The 'O' group persons have no antigens in their red corpuscles.

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