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(A) Venn diagram of OTUs (at distance 0.03). (B) Rarefaction curve based on observed species. (C) Box plots of α-diversity index of OTUs number (1), Chao1 (2), and Simpson (3). (D) NMDS of OTU-based unweighted (1) and weighted (2) UniFrac distances. gtcm, the control group; gtmm, the placebo group; gttm, the TXYF group.
