Why do doctors have to check what blood type a person has before receiving a transfusion?
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A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
B. Different blood types have different antigens that will be attacked by someone with
antibodies against that blood type.
C. Your blood type doesn't matter as long as you get the correct amount of blood in a
transfusion.
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D. They need to have the same blood type because their DNA must be similar enough to
blend or will cause side-effects and possibly be rejected.