Multiple choice

Which blood group has both 'a' and 'b' antibodies?

  1. O

  2. AB

  3. A

  4. B
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood type O individuals have both anti-A and anti-B antibodies in their plasma because they lack A and B antigens on their red blood cells. Type AB has neither antibody, type A has anti-B, and type B has anti-A.

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