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. 2022 Mar 24;9:820799. doi: 10.3389/fnut.2022.820799

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Copyright © 2022 Ding, Xu and Li.

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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Evolutionary branching diagram of LEfSe analysis and histogram of LDA value distribution of gut microbiota (A) and KEGG metabolic pathway histogram at phylum level and genus level (B) of functional genes of gut microbiota in SAMP8 and SAMR1 mice. A: NT-free group; B: basal diet group; C: NT intervention group; D: model control group. In the evolutionary branching diagram, the circle radiated from inside to outside represented the taxonomic level from phylum to species. The diameter of the small circle was proportional to the relative abundance. The species with no significant difference was represented by yellow, and the other species with the highest abundance were colored according to the group with the highest abundance.