Figure 1
From: HIV-1 Subtype distribution in morocco based on national sentinel surveillance data 2004-2005
HIV-1B Maximum likelihood (ML) trees. The ML tree includes HIV-1B Moroccan sequences for which we have RT and PR sequences, as well as 46 subtype B reference sequences from the HIV database that were randomly chosen to represent major geographic areas in the world. The tree was generated using the GTR+G model of nucleotide substitution using the concatenated RT and PR genes. Branches are drawn in scale, according to the bar at the bottom, and colored to reflect geographic origin according to the legend of the figure. The number along a branch indicates significant bootstrap support (> 65%). Sequences were named using the year of sampling preceded by the two letter county code of origin, according to the HIV database guidelines.