Figure 6From: Limited SHIV env diversification in macaques failing oral antiretroviral pre-exposure prophylaxisPhylogenetic analysis of SHIV 162P3 challenge stock and longitudinal env sequences generated by single genome amplification in all six infected macaques. The neighbor-joining method was used for the analysis. V1-V5 env sequences from individual macaques are color coded. PrEP breakthrough infections are characterized by a reduced generation of virus diversity relative to untreated animals as evidenced by the length of the branches.Back to article page