Fig. 3.

Relative abundance (%) of dominant (a) and minor/rare (b) order–specific 16S rDNA sequences in human faecal samples collected from the healthy subjects (1) and from the patients with primary progressive multiple sclerosis (2). The marker shows a median; the box shows the 75%25% quartile range, while the lines indicate the fluctuation range The p-values of the MannWhitney test for the cohorts’ comparison are shown in brackets after the order name