title: Editorial: HL-A system and rheumatic diseases.
mesh_terms: D001168:Arthritis / Q000276:immunology; D016918:Arthritis, Reactive / Q000276:immunology; D003424:Crohn Disease / Q000276:immunology; D005796:Genes; D006649:Histocompatibility Antigens / Q000032:analysis*; D006650:Histocompatibility Testing; D006801:Humans; D006822:Hybrid Cells; D006824:Hybridization, Genetic; D012216:Rheumatic Diseases / Q000175:diagnosis / Q000235:genetics / Q000276:immunology*; D013167:Spondylitis, Ankylosing / Q000276:immunology
chemical_list: D006649:Histocompatibility Antigens