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. 2020 Jun 4;10:9146. doi: 10.1038/s41598-020-66156-w

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fecal microbiota variations associated with Blastocystis infection in rats in a representative experiment. (a) Alpha diversity was determined by observed Operational Taxonomic Unit (OTU) measurement according to sequences per sample in feces of control (n = 6) and infected (n = 12) rats at D31. (b) Area under the curve (AUC) of the observed OTUs for control and infected rats. (c) Principal coordinates analysis (PCoA) of the unweighted UniFrac distance of control (red plots) and infected (blue plots) rats at D31. Significance (p = 0.001) and the strength of explained variation (R² = 0.0962) were assessed with Adonis. (d) LEfSE (LDA Effect Size) was used to investigate bacterial taxa that drive differences between control and infected rats. Red, taxa higher in controls; Green, taxa higher in infected rats. (e) Ratio Firmicutes/Bacteroides in control (n = 6) and infected (n = 12) rats at D31. (f) Correlation between AUC of colonic sensitivity and Firmicutes/Bacteroides ratio. (g-h) Correlation between AUC of colonic sensitivity and relative abundance of Oscillospira (g) and Clostridium (h). Statistical analyses: a Two-way ANOVA test followed by a Sidak post-hoc test; b, t-test; e, Mann-Whitney; f, g and h, Spearman-test; *p < 0.05.