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Effect of bowel preparation on intestinal microbiota. (A), Shannon index; (B), Simpson index; (C), Observed species; (D), PCoA of β diversity index; (E), scalar-Venn representation. CB, control group 3 days before bowel preparation (n = 16); CM, control group during bowel preparation (n = 16); CA, control group 5–7 days after bowel preparation (n = 16). Data are presented as means ± SD. ns, P > 0.05; *P < 0.05.
