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. 2016 Jul 19;17:85. doi: 10.1186/s12931-016-0407-7

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© The Author(s). 2016

Open AccessThis 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. 6 — Differential cell counts in bronchoalveolar lavage fluid after inhalation of silver nanoparticles at 1 and 7 days post-inhalation in Sprague Dawley rats (Panels a-d) and in Brown Norway rats (Panels e-h) as a function of lung dose. Data shown as mean ± SD (n = 8–12 rats per group). *P < 0.05, **P < 0.01, ***P < 0.001 versus the Air only control (0) within each time-point