Blood Groups and Significance · NCERT Biology

Why is blood group AB positive referred to as the 'Universal Recipient' specifically?

  1. It lacks all three ABO and Rh antibodies
  2. It carries no A, B, or Rh antigens on RBCs
  3. It produces all three types of antibodies
  4. It has only Anti-Rh antibody in plasma
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Correct answer: It lacks all three ABO and Rh antibodies

An AB+ individual has A, B, and Rh antigens on their RBCs. Consequently, their plasma contains no antibodies against these antigens, allowing them to receive any blood type — A, B, O, Rh+ or Rh− — without an immune reaction.

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