Fig. 3
From: Toothbrush microbiomes feature a meeting ground for human oral and environmental microbiota
Although toothbrushes contained a less diverse microbiota and fewer commonly occurring antibiotic resistance genes (ARGs) than the oral microbiome, they had a more diverse resistome. a K-means clustering of all HMP-II oral sample taxonomic profiles (n = 1259; gray points) was used to generate centroids equal in size to the number of toothbrush samples (n = 34). Samples closest to the centroids (orange points) were selected for resistome analysis. b Shannon indices for overall taxonomic and ARG profiles for the subset oral samples (orange) and on toothbrushes (red). Mann-Whitney test p values for differences by sample type are displayed. c Overlap of conserved (i.e., detected in at least 50% respective samples) microbial species and antibiotic ARGs