title: Seronegative arthropathies.
mesh_terms: D001168:Arthritis / Q000145:classification* / Q000235:genetics; D006801:Humans; D012217:Rheumatoid Factor / Q000032:analysis; D013167:Spondylitis, Ankylosing / Q000235:genetics; D009626:Terminology as Topic
chemical_list: D012217:Rheumatoid Factor