Variation in relative abundances of bacterial taxa from fecal microbial communities of 46 adult healthy mice, ordered per shipment group.

<p>A single time point from each mouse (the first collected) is presented. The column on the right shows the average of all 46 samples. (a) Relative abundances of phyla and classes. (b) Heatmap showing the relative abundances of the 400 most abundant OTUs. Phylum assignments of these OTUs are shown along the right side of the heatmap. Key on the right indicates the correspondence of the gray values to the relative OTU abundance.