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. 2022 Jul 28;13:897992. doi: 10.3389/fmicb.2022.897992

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Copyright © 2022 Jing, Chang, Xu, Wang, Wu, Huang, Wang and Zhang.

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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Gut microbiota between healthy older and younger people. (A) Unweighted pair group method with arithmetic mean clustering of samples shows younger and older groups were separated in the phylogenetic tree. (B) Principal coordinates analysis based on weighted UniFrac metrics. (C) Principal coordinates analysis based on unweighted UniFrac metrics. (D) The Firmicutes/Bacteroidota ratio of the two groups. (E–I) Alpha diversity indicators of the two groups. (J) The heatmap of correlation between alpha diversity and age.