BLOOD TYPING BOOKLET NAME: ________________ ANTIGEN: molecule (protein) that stimulates an immune response ex: An allergen is a substance that causes the allergic reaction In blood typing, they are called agglutinogens ANTIBODY: proteins that are found in blood or other bodily fluids of vertebrates, and are used by the immune system to identify and neutralize foreign objects, such as bacteria and viruses in blood typing, they are called agglutinins If an individual is exposed to a blood group antigen that is foreign, the immune system will produce _______antibodies________that can specifically bind to that particular blood group antigen and cause ______clotting________ TYPE A Blood: Has __A___ antigens and will produce __B___ antibodies A antigen RBC Page 1 TYPE AB Blood: Has __A & B___ antigens and will produce ___no__ antibodies A antigen RBC Page 3 TYPE B Blood: Has _B____ antigens and will produce __A___ antibodies RBC Page 2 TYPE O Blood: Has _no____ antigens and will produce __A & B___ antibodies RBC Page 4 When a person with A Blood receives B Blood in a transfusion, what happens? CLOTTING Here’s a picture demonstrating why: B antigens are foreign so recipient produces antibodies A antigen RBC RBC DONOR RECIPIENT Page 5 When a person with AB Blood receives B Blood in a transfusion, what happens? NOTHING Here’s a picture demonstrating why: B antigens are not foreign so no antibodies are produced A antigen RBC RECIPIENT RBC DONOR Page 7 When a person with O Blood receives A Blood in a transfusion, what happens? CLOTTING Here’s a picture demonstrating why: A antigens are foreign so A antibodies are produced A antibody A RBC antigen RBC RECIPIENT DONOR Page 6 When a person with B Blood receives O Blood in a transfusion, what happens? NOTHING Here’s a picture demonstrating why: O has no antigens so it is not bringing anything foreign RBC RECIPIENT Page 8 RBC DONOR

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