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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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Each data point represents the mean±SD virus titer (log₁₀ EID₅₀/ml of sample media) from pigs positive for influenza virus. Numbers of pigs sheding virus (of 4) are shown in each bar. The lower virus detection limit is 10^0.5 EID₅₀/ml.