A patient is confirmed to have blood group O. Which antibodies are normally present in the patient's plasma?
Correct answer: C. Anti-A and anti-B
- A. Anti-A only
- B. Anti-B only
- C. Anti-A and anti-B
- D. No ABO antibodies
Explanation
Group O plasma normally contains both anti-A and anti-B antibodies because the red cells have neither A nor B antigen. Giving incompatible red cells can cause antibody-mediated agglutination and haemolysis.
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About Blood and Immunity
Blood and immunity covers plasma, red blood cells, white blood cells, platelets, haemoglobin, blood groups and haemostasis. It explains innate and adaptive defenses, antibodies, lymphocytes, inflammation, vaccination and immune memory, with a distinction between active and passive immunity and between antigen and antibody.
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