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A person with blood group AB is considered a universal recipient because he has:

  1. A
    both A and B antigens on RBC but no antibodies in the plasma.
  2. B
    both A and B antibodies in the plasma.
  3. C
    no antigen on RBC and no antibody in the plasma.
  4. D
    both A and B antigens in the plasma but no antibodies.

Solution & Step-by-step Explanation

Blood group AB individuals have both A and B antigens on the surface of their red blood cells. Crucially, they have no antibodies (neither anti-A nor anti-B) in their plasma, allowing them to receive blood from any group without an immune reaction.

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A person with blood group AB is considered a universal recipient because he has:
A
both A and B antigens on RBC but no antibodies in the plasma.
B
both A and B antibodies in the plasma.
C
no antigen on RBC and no antibody in the plasma.
D
both A and B antigens in the plasma but no antibodies.

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