Why is it that a person with blood group AB cannot donate blood to a recipient of other blood groups?
Presence of antibodies a and b in plasma of blood group AB.
Absence of antigen A and B which would be attacked by antibodies.
Presence of antigen A and B which are attacked by antibodies in other blood groups.
Absence of antibodies a and b in blood group AB which would attack then antigens in other blood groups.
