title: HLA-DRw4 in Felty's syndrome.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000235:genetics; D044383:Black People; D005258:Felty Syndrome / Q000453:epidemiology / Q000235:genetics*; D000949:Histocompatibility Antigens Class II / Q000032:analysis*; D006801:Humans
chemical_list: D000949:Histocompatibility Antigens Class II