Fig. 3From: Compositional variation of the human fecal microbiome in relation to azo-reducing activity: a pilot studyBean/Violin plots representing the relative abundance of different genera of phyla Bacteroidetes (A) and Firmicutes (B) among groups of different azo-reducing activity grade. p-values of significant differences (p < 0.05), as assessed by Kruskal–Wallis test, as well as post hoc pairwise tests are indicated above each plotBack to article page