Why is it possible for a person with type A negative blood to have a negative reaction when receiving a transfusion of whole type O negative blood?
A. Some type O cells possess B agglutinogens on their surface.
B. The Rh factor would cross-react.
C. Blood transfusions can only occur within the same blood group.
D. The type O blood may have high enough levels of anti-A antibodies that could cross-react with the recipient's cells.
Ans: D. The type O blood may have high enough levels of anti-A antibodies that could cross-react with the recipient's cells.
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