Figure 4.
There was no significant difference in the α-diversity of microbiota between groups. Bacterial α-diversity was tested by observed species (A), Chao (B), Ace (C), Shannon (D), and Simpson indices (E). The Wilcoxon rank-sum test was used for comparisons between two groups. The boxplot of α-diversity was drawn, and the analysis above was performed using R software (v3.1.1).