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. 2014 Dec 4;11:211. doi: 10.1186/s12985-014-0211-2

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© Zhu et al.; licensee BioMed Central Ltd. 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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 tree of class I NDV isolatess based on the new classification methods by the complete sequence the F genes. The reference class I NDV isolates characterized in this study were shown in bold.