title: HLA-DR antigens in rheumatoid arthritis in North India.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000235:genetics / Q000276:immunology*; D006684:HLA-DR Antigens; D015804:HLA-DR4 Antigen; D000949:Histocompatibility Antigens Class II; D006801:Humans; D007194:India; D012306:Risk
chemical_list: D006684:HLA-DR Antigens; D015804:HLA-DR4 Antigen; D000949:Histocompatibility Antigens Class II