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Different diversity of the gut microbiota in distal and proximal CRC patients. (A) The Sobs index, (B) the Shannon index, and (C) the Simpson index of the ileus and no-ileus groups of distal or proximal CRC on the OTU level. The Wilcoxon rank-sum test. Principal coordinate analysis of the weighted UniFrac distance between ileus and no-ileus group of (D) distal and (E) proximal CRC. *p < 0.05, **p < 0.01.
