Figure 2. Stressor exposure significantly disturbs microbiota community structure in the overall sample, while probiotic treatment has no effect.

(A) Mice exposed to SDR had significantly altered microbial profiles, as indicated on a principal coordinate analysis that used unweighted UniFrac distances. This clustering was found to be significant using the adonis statistic. Because the repeated experiments had a significant effect on community structure, the PCoA shows the effect of SDR in each of four repeats of the study on the third axis of the PCoA. (B) Probiotic L. reuteri treatment was not associated with unique clustering of microbial communities.