Numbers of taxa associated with health and disease by indicator species analysis. Dufrêne-Legendre indicator species analysis revealed OTU associations with either health or disease. The number of indicator taxa at phylum, genus, and species levels (OTU indicator value >0.5 and taxa sequence abundance ≥100) of health (green), disease (pale red), or both (light blue) are shown. Taxa that were present in the samples but not an indicator of either health or disease are shown in grey. (A) SubG samples. (B) SupG samples. (C) Tongue samples.