Figure 1

The phylogenetic tree based on partialpolgene fragment of HIV-1. The tree topologies were inferred by the neighbor-joining method. Numbers at the nodes represent the percentages of bootstrap values (only values > 75% are shown).
The phylogenetic tree based on partialpolgene fragment of HIV-1. The tree topologies were inferred by the neighbor-joining method. Numbers at the nodes represent the percentages of bootstrap values (only values > 75% are shown).