Why do we have blood types?

blood type  The test to determine your blood group is called ABO typing Your blood sample is mixed with antibodies against type A and B blood Then, the sample is checked The ABO system The most important blood group system is ABO, in which your blood is classified as A, B, O or AB This is determined by two antigens on the red

The blood types that exist in humans are A, B, AB and O Not all blood types are compatible with each other, however, and therefore it's The letter in your blood type – A, B or O

In blood typing, antigens on the surfaces of red blood cells are also known as agglutinogens and the antibodies that react against them Blood Groups Four major blood groups: A, B, AB and O These four blood groups were originally identified by Karl Landsteiner in 1900 Your blood group is