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. 2009 Jan 23;5(1):e1000274. doi: 10.1371/journal.ppat.1000274

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Haaland et al.

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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Nucleotide sequences were aligned for all linked donors (green lines) and linked recipients (blue lines) and neighbor-joining trees were drawn representing (A) subtype C transmission pairs and (B) subtype A transmission pairs. Recipients in red indicate infection by multiple variants. Horizontal branch lengths are drawn to scale with scale bar representing 2% divergence. Asterisks indicate branches with bootstrap values greater than 0.99. Black lines represent unrelated reference sequences.