Medical Definition of HLA-a antigens
1.
Polymorphic class I human histocompatibility (HLA) surface antigens present on almost all nucleated cells. at least 20 antigens have been identified which are encoded by the a locus of multiple alleles on chromosome 6. They serve as targets for T-cell cytolytic responses and are involved with acceptance or rejection of tissue/organ grafts.
(12 Dec 1998)
Lexicographical Neighbors of HLA-a Antigens
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