title: TRYPTOPHAN METABOLITE EXCRETION IN CONNECTIVE TISSUE DISEASES DEMONSTRATING A DIFFERENCE BETWEEN RHEUMATOID SPONDYLITIS AND RHEUMATOID ARTHRITIS.
mesh_terms: D001168:Arthritis; D001172:Arthritis, Rheumatoid; D003240:Connective Tissue Diseases; D003937:Diagnosis, Differential; D006801:Humans; D007737:Kynurenine; D008180:Lupus Erythematosus, Systemic; D008660:Metabolism; D012595:Scleroderma, Systemic; D013166:Spondylitis; D013167:Spondylitis, Ankylosing; D014364:Tryptophan; D014556:Urine
chemical_list: D007737:Kynurenine; D014364:Tryptophan
keywords: ARTHRITIS, RHEUMATOID; DIAGNOSIS, DIFFERENTIAL; KYNURENINE; LUPUS ERYTHEMATOSUS, SYSTEMIC; METABOLISM; SCLERODERMA; SPONDYLITIS; TRYPTOPHAN; URINE