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. 2016 Jan 11;47:17. doi: 10.1186/s13567-015-0293-x

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© Sinn et al. 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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Phylogenetic analysis based on nucleotide sequences of full-length genomes of 41 PRRSV-1 strains and PRRSV-2 prototype VR2332 as an out-group. The PRRSV strains presented in this study are marked in red and the associated sub-tree is highlighted with a box. The tree was constructed using the neighbour joining method with the numbers at the nodes representing bootstrap values in % of 1000 replicates. Scale bar: number of substitutions per site.