Persons having anti- A and anti- B is agglutinins in their serum belong to which blood group_____________?
Correct answer: D. O
- A. A
- B. B
- C. AB
- D. O
Explanation
Group O red cells lack A and B antigens, so the plasma contains both anti-A and anti-B agglutinins. Group AB is the opposite pattern, with both antigens and neither antibody.
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