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. 2009 May 1;5(5):e1000377. doi: 10.1371/journal.pcbi.1000377

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Wertheim, Worobey.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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SIVsm/HIV-2 loci (A) gag, (B) pol, and (C) env and SIVcpz/HIV-1 loci (D) gag, (E) pol, and (F) env are depicted. SIV lineages are blue, HIV-2 lineages are green, and HIV-1 lineages are red. Major SIVsm clades are designated by number and the HIV clades are designated by group. Nodes with posterior probability >0.9 are indicated with an asterisk.