Fig. 4From: The penile microbiota of Black South African men: relationship with human papillomavirus and HIV infectionBeta diversity of the penile microbiota. Principal Coordinates Analysis (PCoA) plots of the weighted UniFrac distances of the penile microbiota coloured according to a) high-risk human papillomavirus (HR-HPV) infection status, b) human immunodeficiency virus (HIV) infection status, c) HIV and HR-HPV infection, and d) CD4+ T-cell count status. The first two principal coordinate axes of variations and the percentage variation explained by each (Axis.1: 45.3% and Axis.2: 14.9% (a-c); and Axis.1: 42.9% and Axis.2: 16.0% (d)) are shown. Each solid point is a bacterial communityBack to article page