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. 2015 Aug 7;12:119. doi: 10.1186/s12985-015-0351-z

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© Wang et al. 2015

Open Access This 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 — Phylogenetic tree of the nucleotide sequence of NDV strains based on a variable portion (nt 1–389) of the F gene. The accession numbers of the sequences derived in this study and those derived from GenBank were shown in Table 1. The tree was constructed using MEGA 4 neighbor-joining method with 1000 replicates of bootstrap. Genotype, sub-genotype and recently Chinese isolates are indicated on the right. ▲: Shaanxi NDV isolates