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. 2015 Apr 16;7(5):1313–1328. doi: 10.1093/gbe/evv066

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© The Author(s) 2015. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1.— — Population structure of 181 S. aureus and 143 S. epidermidis isolates. A phylogenetic tree constructed from 1,478 genes (2,066,448 bp) found in both species using an approximation of the maximum-likelihood algorithm, implemented in FastTree2. The scale represents the number of substitutions per site. The branch linking S. aureus (left) to S. epidermidis (right) is 0.265 substitutions per site long, corresponding to 537,276 variable sites. Isolates are colored according to clonal complexes and asterisks denote clonal complexes that appear paraphyletic on this tree, including the S. aureus CC-1 and the S. epidermidis CC-365.