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. 2022 May 6;9:836500. doi: 10.3389/fnut.2022.836500

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Copyright © 2022 Liu, Zhao, Yang, Zhang, Song, Wu and Liu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Changes in the diversity of the gut microbiota (n = 4/group): (A–C) the Chao1 index, ACE index, and Shannon index of three groups; (D) Samples Cluster Tree analysis based on unweighted pair group method with arithmetic mean method; (E) non-metric multidimensional scaling method (NMDS) is to simplify the research objects (samples or variables) in multidimensional space to low-dimensional space for positioning, analysis, and classification. (F) Principal coordinates analysis (PCoA).