Major Types of Blood

There are 4 types of blood. Blood types A, B, AB and O. Your blood type is inherited from your parents and is determined when you are born.

Blood Type A: "A antigens on the surface of your red blood cells and B antibodies in your blood plasma."

Blood Type B: "B antigens on the surface of your red blood cells and A antibodies in your blood plasma."

Blood Type AB: "Both A and B antigens on the surface of your red blood cells and no A or B antibodies in your blood plasma. "

Blood Type O: "Neither A or B antigens on the surface of your red blood cells, but both A and B antibodies in your blood plasma."