<prompt> In clinical practice to label remission in the case of ulcerative colitis, all the features are needed, EXCEPT:Stool frequency 3 dayNo bleedingNo UrgencyNormal looking mucosa in endoscopy  <response>: In clinical practice, remission mean a stool frequency 3day with no bleeding and no urgency. Sigmoidoscopy to confirm mucosal healing is generally unnecessary. Ref: Journal of Crohns and Colitis 2012 6, 965-990 