to evaluate responses to medical therapy in ulcerative colitis , rectal biopsies of patients with active untreated disease , individuals with positive and negative sigmoidoscopic findings treated with salicylazosulfapyridine , prednisone and 6-mercaptopurine , alone and in combinations and noncolitis controls were compared histologically .
C0009324
ulcerative colitis
C0032952
prednisone