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Manipal Journal of Medical Sciences

Abstract

Over 300 blood group antigens have been discovered in different parts of the world and most them are classified into 35 systems. India has contributed a few rare blood groups including the Bombay phenotype, Indian blood group antigens like In(a), In5 and I-i- phenotype. Besides, there are a few other rare blood groups, though not discovered in India, were encountered here including a host of the weaker variants of A, B and H antigens, the ultra-rare Mg antigen of the MNS blood groups, phenotypes like D- -, Rh-null, I-int, In(b-), Colton-null and r(y)

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