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A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?
A
Blood group A
B
Blood group B
C
Blood group AB
D
Blood group O
Detailed Solution
Blood group O has no A or B antigens on the RBCs, so it is not agglutinated by the recipient's antibodies.
It can be given to persons of any blood group, so O is the universal donor.
It can be given to persons of any blood group, so O is the universal donor.