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. 2017 Feb 21;14:36. doi: 10.1186/s12985-017-0680-1

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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. 2 — Phylogenetic analysis by maximum likelihood of inner genes of H6 subtype AIVs isolated in Anhui Province, 2014: (a) PB2, (b) PB1, (c) PA, (d) NP, (e) M, and (f) NS. The colours of the virus names listed in the PB2, PB1, PA, NP, M, and NS trees match those used in the genotype table. The phylogenetic trees of inner genes were rooted to A/Turkey/Canada/1/1963 (H6N8). The nucleotide sequences of the viruses listed in black were downloaded from GenBank; the viruses listed in red, yellow, or green were sequenced in this study. The sequences shown in cyan and italics were obtained from a paper by Wang GJ. Abbreviations: CK, chicken; DK, duck; GS, goose; SW, swine; WDK, wild duck; WB, wild bird; WGS, wild goose; EN, environment