human leukocyte antigen(redirected from Hla-a antigens)
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human leukocyte antigen
n. Abbr. HLA
Any of various cell-surface antigens in humans that are products of the major histocompatibility complex and are used to type tissue, as to match donors with recipients for organ transplantation.
human leukocyte antigen: any of a complex of genetically determined antigens, occurring on the surface of almost every human cell, by which one person's cells can be distinguished from another's and histocompatibility established.