Fig. 2From: Clinical efficacy of metformin in familial adenomatous polyposis and the effect of intestinal floraThe number of polyps changes in Schematic diagram. Mean number of polyps (indicated by horizontal lines). The two groups on the left indicate changes in the number of polyps in the descending duodenal region; the two groups on the right indicate changes in the number of polyps in the nanocarbon-labeled and postoperative residual regionsBack to article page