we assessed the in vitro effects of sulfasalazine and its 2 main metabolites , sulfapyridine ( sp ) and 5-aminosalicylic acid ( 5-asa ) on functional aspects of peripheral blood lymphocytes ( pbm ) of normal controls and patients with rheumatoid arthritis ( ra ) .
C0036078
sulfasalazine
C0003873
rheumatoid arthritis