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. 2021 Sep 8;18:34. doi: 10.1186/s12989-021-00427-w

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. 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 in a credit line to the data.

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Fig. 3 — MWCNT-mediated lung inflammation. Bronchoalveolar lavage fluid (BALF) total protein and infiltrating inflammatory cell count. MWCNT exposure-induced pulmonary inflammation was not altered by MMP blockade. a Total lavage fluid protein concentration assessed via Bradford protein assay. MWCNT-exposure increased BALF total protein in a dose-dependent manner when compared with controls. b and c BALF cell differentials; Polymorphonuclear neutrophils (PMN) cells were significantly increased by MWCNT exposure at both low and high doses; Macrophages in BALF were decreased in MWCNT treated cells. d Total BALF cells were unchanged by MWCNT exposure. p values based on 2-way ANOVA presented for each figure. N = 4–5 per group. Data presented are means ± SEM