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. 2009 Mar 2;4(3):e4667. doi: 10.1371/journal.pone.0004667

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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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Serum samples collected at week 28 post immunization were used to determine levels of isotype antibodies specific to influenza H5N1 virus (A, n = 6) and hemagglutination inhibition titers (B, n = 5). Error bars are shown to indicate standard deviation. * (A) Indicates statistically significant differences between 0.1 µg HA and 0.3 µg HA groups (p<0.02). ** (B) statistical significance between 0.3 µg HA and PBS mock groups (p<0.02).