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Fig. 4 | BMC Research Notes

Fig. 4

From: Virological response, HIV-1 drug resistance mutations and genetic diversity among patients on first-line antiretroviral therapy in N’Djamena, Chad: findings from a cross-sectional study

Fig. 4

Phylogenetic tree. The evolutionary history was inferred using the Neighbor-Joining method in the protease-reverse transcriptase regions (Saitou and Nei [20]). The tree is drawn to scale, with branch lengths in the same units as those of the evolutionary distances used to infer the phylogenetic tree. The evolutionary distances were computed using the Kimura 2-parameter method (Kimura [21]) and are in the units of the number of base substitutions per site. The analysis involved 43 query nucleotide sequences. All positions containing gaps and missing data were eliminated. Evolutionary analyses were conducted in MEGA6 (Tamura et al. [19])

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