β-diversity between PMP communities. Heatmaps compare the classic Jaccard (Jclass) dissimilarity indices (A) and thetaYC indices (B) for bacterial communities found in PMP patients. Numbering along the left-hand and top sides of each heatmap represent individual patient designations. Each square within the heatmap represents a single pairwise comparison between the corresponding patient communities (labeled at the top and left side of each heatmap). As indicated by the bar below each heatmap, comparisons in which the communities are more dissimilar are more red, whereas communities that are more similar are less red.