MeSH definition : 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.;
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.