title: Evolution and function of the HLA system.
mesh_terms: D000483:Alleles; D001327:Autoimmune Diseases / Q000276:immunology; D005075:Biological Evolution; D002874:Chromosome Mapping; D005787:Gene Frequency; D008040:Genetic Linkage; D006680:HLA Antigens / Q000235:genetics*; D006801:Humans; D011110:Polymorphism, Genetic; D012306:Risk
chemical_list: D006680:HLA Antigens