Single correct option
A person with blood group AB has which of the following in the blood plasma?
- A. Both anti-A and anti-B antibodies
- B. Only anti-A antibodies
- C. Only anti-B antibodies
- D. No anti-A and no anti-B antibodies
Show answer and solution
Answer: (D) No anti-A and no anti-B antibodies
A person's plasma has antibodies against antigens absent on their own red cells. Group AB cells carry both A and B antigens, so the plasma contains neither anti-A nor anti-B. That is why AB is the universal recipient. Group O has both antibodies, group A has anti-B, and group B has anti-A.
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