Abo antigens
(Science: haematology, immunology) a system of genetically determined antigens (proteins) located on the surface of the erythrocyte.
The presence of these specific antigens gives a blood its unique properties. Because of the antigen differences existing between individuals, blood groups are significant in blood transfusions, maternal-foetal incompatibilities (erythroblastosis foetalis), tissue and organ transplantation.
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