Maximum likelihood tree of the <i>pol</i> (approximately 1400 nt) and <i>env</i> (approximately 280 nt) genes of HIV-1 subtype B strains circulating in Venezuela.

<p>HIV-1 subtype B sequences infecting Waraos are shown in red while sequence from patient 162 is shown in blue. The aLRT support values are indicated only at key nodes. The tree was rooted using subtype C reference strains (grey branches) as outgroups. Horizontal branch lengths are drawn to scale with the bar at the bottom indicating nucleotide substitutions per site.