title: HLA-DR4 in Felty's syndrome.
mesh_terms: D005258:Felty Syndrome / Q000276:immunology*; D015804:HLA-DR4 Antigen; D000949:Histocompatibility Antigens Class II / Q000235:genetics*; D006801:Humans
chemical_list: D015804:HLA-DR4 Antigen; D000949:Histocompatibility Antigens Class II