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. 2015 Sep 11;12:137. doi: 10.1186/s12985-015-0363-8

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© Caraballo et al. 2015

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Plaque size for PR isolates compared to its parental strain, NY99. Vero cells were infected for either 3 or 4 days with the WNV and plaque sizes were measured expressed as least square means (LS Means) in inches. ANOVA analysis indicated that the PR isolates had statistically significantly smaller plaques than NY99. (*p = 0.002, **p = 0.0001)