Fig. 3

Relative abundance counts of Firmicutes (a), Actinobacteria (b), Bacteroidetes (c) and Proteobacteria (d), which were found to be the most abundant phyla across all samples. The Wilcoxon test was used to compare differences in the abundance of each phylum between two groups. ***: p ≤ 0.001; **: 0.001 < p < 0.01; *: p < 0.05