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. 2008 Jul 11;4(7):e1000102. doi: 10.1371/journal.ppat.1000102

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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Sequences (nucleotides 77 to 1723) were analyzed by using the neighbor-joining method with 500 bootstraps. Phylogenetic tree was rooted to the HA gene of A/Goose/Guangdong/1/96 (H5N1) virus. H5N1 viruses used in this study are shown in red. Abbreviations: BHGs, bar-headed goose; Ck, chicken; Dk, duck; Gs, goose; HCr, house crow; MDk, muscovy duck; Qa, quail; WS, whooper swan.