alleryStart learning →In an emergency, which blood types are compatible for a type B recipient?
ATypes A and O only
BTypes AB and O only
CTypes A, B, and O
DTypes B and O only
Answer & Solution
Correct answer: D. Types B and O only
1. An individual with type B blood has preformed anti-A antibodies circulating in the plasma.
2. Any donated erythrocyte carrying the A antigen would therefore be agglutinated.
3. That rules out type A blood and type AB blood, since both display the A antigen.
4. Type B cells carry only the B antigen, which is self here, and type O cells carry neither antigen.
5. Types B and O are therefore the compatible choices for a type B recipient.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.6 Blood Typing_
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