title: Letter: HL-A antigens in inflammatory bowel disease.
mesh_terms: D003093:Colitis, Ulcerative / Q000235:genetics / Q000276:immunology*; D003424:Crohn Disease / Q000235:genetics / Q000276:immunology*; D006649:Histocompatibility Antigens; D006801:Humans; D010641:Phenotype
chemical_list: D006649:Histocompatibility Antigens