A man whose blood group is not known meets wi | vedclass

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(B) Individuals with blood group $O, Rh^-$ are known as universal donors. This is because their red blood cells lack both $A$ and $B$ antigens,and the

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$O, Rh^-$

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(B) Individuals with blood group $O, Rh^-$ are known as universal donors. This is because their red blood cells lack both $A$ and $B$ antigens,and they also lack the $Rh$ antigen. Consequently,their blood does not trigger an immune response (agglutination) when transfused into recipients of any other blood group. Therefore,in emergency situations where the patient's blood group is unknown,$O, Rh^-$ blood is the safest choice for transfusion. Thus,option $B$ is correct.

$A$ man whose blood group is not known meets with a serious accident and needs blood transfusion immediately. Which one of the blood groups readily available in the hospital will be safe for transfusion?

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