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. 2012 Feb 21;7(2):e30960. doi: 10.1371/journal.pone.0030960

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This is an open-access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.

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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Virus titers in spleen, lung and brain samples and from oropharyngeal (oral) and cloacal (cloaca) swabs collected from ducks infected with HP VN/1203/E and HP VN/1203/K at 1, 2, 3, 4, and 6 days pi. All titrations were performed in Vero cells. Data show mean and SEM of 6 birds per time point for each virus.