alleryIn ABO grouping, group O RBCs have which antigens?
ABoth A and B
BNeither A nor B
COnly A
DOnly B
Answer & Solution
Correct answer: B. Neither A nor B
Group O RBCs carry neither A nor B antigen; their plasma contains anti-A and anti-B. Group AB has both antigens and neither of these antibodies. Rh status is a separate grouping that must also be matched.
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