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. 2016 Jan 13;11(1):e0145194. doi: 10.1371/journal.pone.0145194

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© 2016 Seifert 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 credited

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Fig 3 — This global phylogeny for Y. pestis is based upon fig 1A and S3B in Cui et al. [16]. It includes four major branches (0–4) and is rooted with Y. pseudotuberculosis, the ancestor of Y. pestis. Key SNPs s545 and S19 previously identified in studies [16, 17] separate branch 0 and branch 2 from branch 1, respectively. All strains were derived for s545 and ancestral for S19, indicating their location on branch 1. A total of 14 SNPs between nodes N07 and N10 were tested. The derived state of samples ES2 and Ber at position s12 (as previously described in 4) places them closer to node N10. Samples from this study (Mp and B) and ES1 have the derived state of SNP s12, which maps them closer to N07 at the beginning of branch 1.