Variability of the gut microbiome with geography.

<p>A) PCoA of the weighted UniFrac distances stratified by geographical origin. B) Phylogenetic tree of the OTUs. The 30 clades most relevant for the differentiation of the USA and Italian samples form the Burkina Faso, Malawi and Venezuelan samples are highlighted. Colors distinguish those more prevalent in the USA and Italian samples (green) form those more prevalent in the Burkina Faso, Malawi and Venezuelan samples (red) C) PCoA of the weighted UniFrac distances using only the OTUs included in the most relevant clades. D) Heatmap of the Log₁₀ of the relative abundances of the 30 most relevant clades (rows) identified by PhyloRelief. The age and origin of the individuals (columns) are indicated.