How can you can say that blood group Ois universal donor?

As blood group O has no antigen and has antibody AB. when this blood is transfused into a person having blood group AB which has antigen AB and no antibody,the person will die due to antigen antibody reaction.then how can you say that blood group O is universal donor and blood group AB is universal recipient?
Asked Jan 29, 2013
O Positive has antibodies that fight against both type A and type B blood. It is O negative that has no antigens that designates it the "universal donor."
Answered Jan 29, 2013

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.