Question

Which antibody/antibodies would be present in the plasma of a person with blood group O?

• A. Anti-B
• B. Anti-A
• C. Nil
• D. Anti-A and anti-B

Answer 1

The correct option is D Anti-A and anti-B

A person with blood group O has both the antibodies (anti-A and anti-B) in their plasma. People with such blood groups cannot receive A and B blood because of anti-A and anti-B antibodies. But it can give blood to anyone as both antigens on the surface of RBCs are absent.