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. 2017 Aug 7;7:7429. doi: 10.1038/s41598-017-07879-1

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Phylogenetic trees of all eight segments of H9N2 IAVs isolated from the mink. Phylogenetic trees were constructed using MEGA 6.0, and the reliability of the tree was evaluated by the bootstrap method with 1,000 replications. The black bold sequences represented the H9N2 IAVs isolated from the mink, the red sequences represented the reference strains. (A), HA; (B), NA; (C), PB2; (D), PB1; (E), PA; (F), NP; (G), M; (H), NS.