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If a person has AB- blood, who all can donate blood to him?(a) A+ , B-, O -, AB+(b) A- , B -, O+, AB+(c) A+, B+, O+, AB-(d) A-, B-, O-, AB-This question was posed to me in an online quiz.The doubt is from Blood Groups in division Pathology of Clinical Science

Answer» RIGHT option is (d) A-, B-, O-, AB-

The best I can explain: A person with AB- blood has antigens for A and B and the antibodies for them are absent. Since the blood group is negative, it means that antigen D or the Rhesus factor is ALSO absent in the blood. Thus, all blood groups with negative rhesus FACTORS can donate blood.


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