22+ Blood Type A B Negative Pics. Depending on whether the rh antigen is present, each blood type is assigned a positive or negative. The rh negative blood type is said to be of unknown origin.
Blood Donationblood Group Type Ab Negative Stock Illustration 590321480 from image.shutterstock.com
There are eight main blood types: A, b, o, and ab. Where does rh negative blood come from?
Whether your blood group is type a, b, ab or o is based on.
Being rare, it is extremely important to maintain sufficient supply for blood group b has a b antigen on red cells with the a antibody in the plasma. Human blood type is determined by antigens on the red blood cells. The rh negative blood type is said to be of unknown origin. Blood type b is dominant over blood type o, so anyone who has one b gene will have the b blood type, even if they carry one type o gene.
