Person with blood group AB is considered as universal recipient because he has:
both A and B antigens on RBC but no antibodies in the plasma
both A and B antibodies in the plasma
no antigen on RBC and no antigens in the plasma
both A and B antigens in the plasma but no antibodies
ABO grouping is based on the presence of antigens on the Red Blood Cells (RBCs) and antibodies in the plasma. Individuals with blood group AB possess both Antigen A and Antigen B on their RBCs, but their plasma contains no antibodies (neither anti-A nor anti-B). The absence of antibodies allows them to accept blood from any donor group (A, B, AB, or O) without an immune reaction, making them 'universal recipients' , .
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