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A Jungle in There: Bacteria in Belly Buttons are Highly Diverse, but Predictable

Figure 2

Distribution of pairwise phylogenetic distances among phylotypes.

The 23 most frequent phylotypes (which were also, on average, abundant and accounted for 50% of the bacterial reads we encountered) are derived from very few, related, clades (green; 23 phylotypes that occur on >50% of samples; mean pairwise Kimura 2-parameter distance = 0.070), while the remainder of phylotypes were phylogenetically dispersed (blue histogram; distribution of mean pairwise phylogenetic distances among the remaining 2345 phylotypes).

Figure 2