Fig. 3

Phylogenetic tree of HIV-1 strains of interest and reference strains downloaded from the Los Alamos database. Out of eight identified clusters, two clusters are composed of sequences of interest which have grouped together and in the other six clusters it is the sequences of interest which are grouped around the reference sequences identified in Gabon, Equatorial Guinea, Italy, the Democratic Republic of Congo and the United States. A1, F2, G, CRF02_AG and CRF45_cpx strains were identified with colored symbols in red, green, yellow, blue and black respectively. Branches corresponding to partitions replicated in less than 50% of bootstrap replicates have been collapsed. The percentage of replicated trees in which related strains are clustered in the bootstrap test (500 replicates) is shown next to the branches