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. 2017 Sep 11;9:52. doi: 10.1186/s13099-017-0201-1

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© The Author(s) 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Phylogenetic analysis of virulence factors. a VacA, the phylogeny was inferred from 138 sequences using maximum likelihood based on the GTR+G model. Only the first positions were included, and all gaps were removed. b HorB, the phylogeny was inferred from 140 sequences using the NJ algorithm, and the distance was computed using the Kimura 2-parameter method with a gamma distribution of 1; all gaps were removed. A total of 1000 bootstrap repetitions were used for all the reconstructions as statistical support