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. 2019 Apr 16;20:76. doi: 10.1186/s12931-019-1045-7

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© The Author(s). 2019

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. 2 — PM_2.5-induced infiltration of inflammatory cells in lungs was ameliorated by fish oil. Pathological changes and morphological alteration of lung tissues were evaluated by HE staining. a PBS group; (b) PM_2.5 alone group; (c) corn oil group; (d) corn oil + PM_2.5 group; (e) fish oil group; (f) fish oil + PM_2.5 group; (g) Vit E group; (h) Vit E + PM_2.5 group. Yellow and red arrows showed infiltration of inflammatory cells (lymphocyte and macrophage), bars 10 μm