<p><b>Copyright information:</b></p><p>Taken from "HIV-1 sequence evolution in vivo after superinfection with three viral strains"</p><p>http://www.retrovirology.com/content/4/1/59</p><p>Retrovirology 2007;4():59-59.</p><p>Published online 23 Aug 2007</p><p>PMCID:PMC2020475.</p><p></p>llected in 2001–2005. Distances were calculated with the Tamura-Nei method using the gamma model with α = 0.25, and 1000 bootstrap replicated were analysed. The three separate clusters comprised of strains B1, B2, and CRF01_AE are indicated. A representative sequence set was used to draw the phylogenetic tree
