title: Rheumatoid arthritis as a systemic disease.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000097:blood / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000276:immunology / Q000378:metabolism / Q000473:pathology / Q000503:physiopathology / Q000628:therapy; D003095:Collagen Diseases; D003238:Connective Tissue / Q000378:metabolism; D005128:Eye Diseases / Q000209:etiology; D005260:Female; D006331:Heart Diseases / Q000209:etiology; D006801:Humans; D008171:Lung Diseases / Q000209:etiology; D008206:Lymphatic Diseases / Q000209:etiology; D008297:Male; D009461:Neurologic Manifestations; D009468:Neuromuscular Diseases / Q000209:etiology; D011584:Psychology; D011859:Radiography; D012214:Rheumatic Heart Disease; D012217:Rheumatoid Factor / Q000032:analysis; D012218:Rheumatoid Nodule; D013163:Splenomegaly / Q000209:etiology; D013582:Synovial Fluid / Q000032:analysis
chemical_list: D012217:Rheumatoid Factor