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