Template:SerotypeA normal

HLA-A (A) is a human leukocyte antigen serotype within HLA-A serotype group. The serotype is determined by the antibody recognition of αundefined subset of HLA-A α-chains. For A, the alpha "A" chain are encoded by the HLA-A* allele group and the β-chain are encoded by B2M locus. A and A* are almost synonymous in meaning.