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major histocompatibility complex n.
Abbr. MHC A chromosomal segment that codes for cell-surface histocompatibility antigens and is the principal determinant of tissue type and transplant compatibility. Also called HLA complex.
|major histocompatibility complex |
A group of genes that code for cell-surface histocompatibility antigens and are the principal determinants of tissue type and transplant compatibility. They are the most diverse genes in humans and are used to determine if a sample of DNA comes from a specific person.
group of genes that code for proteins found on the surfaces of cells that help the immune system recognize foreign substances. MHC proteins are found in all higher vertebrates. In human beings the complex is also called the human leukocyte antigen (HLA) system