A person with blood group, O can be given blood from persons who have blood belonging to

A person with blood group O can be given blood from persons who have blood belonging to group O only. This is because individuals with blood group O do not have any antigens on the surface of their red blood cells, which means that they do not have anything that the immune system of the recipient can react against. Blood group A has A antigens, blood group B has B antigens, and blood group AB has both A and B antigens on the surface of their red blood cells. Therefore, if a person with blood group O receives blood from a person with a different blood group, the recipient's immune system may recognize the antigens on the surface of the red blood cells as foreign and mount an immune response, which can result in serious complications.