Figure 1From: Near full-length genome analysis of low prevalent human immunodeficiency virus type 1 subclade F1 in São Paulo, BrazilMaximum likelihood tree of Brazilian subclade F1 strains and reference strains inferred from partial pol region. Black circles show the newly sampled strains from Brazil. For clarity purposes, the tree was midpoint rooted. The approximate likelihood-ratio test (aLRT) values of ≥ 70% are indicated at nodes. The scale indicates the number of substitutions per site.Back to article page