09/05/2026
H Antigen
A major blood group Antigen that defines blood type π©Έ O, the essential precision of major ABO group Antigen and is made up of B-D galactose molecules.
A human have H Antigen on RBCs. However, some people particularly those who are A blood type have another blood group Antigen called A antigen, screen they have A alleles that encodes for the enzyme.
Glcosyl transferase that catalyzes to the H antigen.those who are B blood group type have a different blood group antigen called B antigen,they gave B alleles that encodes for an enzyme that catalyzes the joining of galactose to H antigen.
As for those with blood type AB, both A and B alleles are formation of both A and B antigen on the surface of RBCs .
In contrast, those with blood type O π©Έ lack them, and the enzymes, and therefore, would have no other but H antigen on their RBCs.
Notes
The Hh blood group π©Έπ©Έcontains one antigen, the H antigen, which is found on virtually all RBCs and is the building block for the production of the antigens within the ABO blood group π©Έπ©Έπ©Έπ©Έ
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