Weighted UniFrac distances plotted in PCoA space comparing the vaginal microbial communities from the 6 GHP study participants (represented by blue, red, yellow, orange, green, and dark purple) reveals clustering by individual that is strongly dictated by specific taxa. The labeled light purple spheres represent taxa, and the proximity of colored participant samples to the taxa spheres is indicative of increased membership of that taxon in a given community. The larger the taxon sphere, the greater that taxon's overall abundance. Three women had communities dominated by Lactobacillus iners, one was dominated by L. helveticus, and two other women had communities with a shared proportion of Atopobium vaginae and Gardnerella vaginalis in addition to Lactobacilli. The vaginal communities represented by the green and dark purple spheres are so closely related that they cannot be distinguished from this vantage point in PCoA space.