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. 2013 Dec 12;10(12):7144–7164. doi: 10.3390/ijerph10127144

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© 2013 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Viremic levels of young chicks subcutaneously inoculated with WN virus variants. Young chicks were inoculated with WN virus variants, 6-LP (▲) and 6-SP (●) in experiment (A), and B-LP (△)and B-SP (○) in experiment (B). Two days old chicks were inoculated with 100 PFU of all variants (n = 4). The virus titers in sera were measured by plaque assay on BHK cells. Mean (±SD) titers are from triplicate cultures.