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. 2016 Nov 22;17:960. doi: 10.1186/s12864-016-3289-7

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© The Author(s). 2016

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. 1 — Cladogram based on the 22 virulence factors analysed using multiplex PCRs. Based on this analysis nine main groups were identified and are highlighted in different colours. The branches of the tree are proportional to the distance between the strains. Legend: group 1 = dark green, group 2 = yellow, group3 = blue, group 4 = light green, group 5 = red, group 6 = dark yellow, group 7 = turquoise group 8 = dark blue, group 9 = dark red