Fig. 1From: Comparison of sampling methods in assessing the microbiome from patients with ulcerative colitisMethod to sample the lavage fluid and biopsy. a, b About 5Â ml of colonic lavage fluid in sigmoid colon was collected by using a Clear-Hemostat catheter. c, d After colonic lavage sampling, the single mucosal biopsy was done at S colon with endoscopic forcepsBack to article page