Figure 1

α Diversity rarefaction curves of cutaneous microbiota in psoriasis (lesion), unaffected and control specimens. (A) Taxonomical richness trends towards decreasing α diversity in unaffected and lesion specimens relative to control, with no statistically significant differences between skin types. (B) Shannon index is significantly different (decreases from control to unaffected to lesion) among skin types at all taxonomic levels (P <0.05), except at the operational taxonomical unit (OTU) level. (C) Analysis of taxa sharing. Taxa present in <3 samples excluded from the analysis. Taxa that are only observed in one clinical skin type are denoted as ‘unique’. Taxa that are present in two types of skin are denoted as ‘shared’. The data show that nearly all taxa are represented in all three types of skin. The shading represents the relative distribution (heatmap) for each column number (green = low, yellow = intermediate, red = high).