Figure 3

Principal Coordinates Analysis (PCoA) of the ancient oral microbiome content for SLB (red) and 114 samples from Neanderthal (green), pre-agricultural (orange), Neolithic (yellow), pre-antibiotic period (blue) and modern-day humans (light blue). Ellipses indicate the 95% confidence areas based on the standard error of the means of distances among samples of the same group.