[Seronegative arthritis].
D001168:Arthritis / Q000235:genetics / Q000276:immunology*; D006680:HLA Antigens / Q000235:genetics; D006801:Humans; D011379:Prognosis; D013166:Spondylitis / Q000276:immunology
D006680:HLA Antigens
Seronegative artritter.