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Discover what blood types are compatible with yours. Get our guide to find out. There are four major blood groups determined by the presence or absence of two antigens, A and B, on the surface of red blood cells.
A blood type (also known as a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system.
There are eight blood types, divided into four categories: A, B, AB, and O, and whether Rh positive or negative. These types are determined by antigens on red blood cells. Learn what this means.
Blood group, classification of blood based on inherited differences in antigens on the surfaces of the red blood cells. The most well-known classification, the ABO blood group system, was developed by Austrian-born American biologist Karl Landsteiner in 1901.
Blood group, also known as blood type, is a category (type) of blood groups based on the presence and absence of blood group antigens in the surface (membrane) of the RBCs, and antibodies on the plasma.
There are 4 main blood groups (types of blood) – A, B, AB and O. Your blood group is determined by the genes you inherit from your parents. Each group can be either RhD positive or RhD negative, which means in total there are 8 blood groups. Blood is made up of red blood cells, white blood cells and platelets in a liquid called plasma.
The four major blood groups are based on whether or not you have two specific antigens -- A and B. Doctors call this the ABO Blood Group System. Group A has the A antigen and B antibody.