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. 2018 Oct 20;131(20):2461–2473. doi: 10.4103/0366-6999.243551

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Copyright: © 2018 Chinese Medical Journal

This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.

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Apoptotic cells were determined by TUNEL staining in the lung tissues of mice in the control, OVA, OVA/PM, and PM groups (×200). TUNEL-positive cells were found in the bronchia and lung cells. Values are mean ± SD. Using one-way ANOVA, followed by LSD multiple range test, comparing with control group, a significant difference is indicated by *P < 0.001 and ^†P < 0.05. Comparing with PM group, a significant difference is indicated by ^‡P < 0.001. Comparing with OVA group, a significant difference is indicated by ^§P < 0.001 (n = 6 per group). TUNEL: Terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling; IHS: Immunohistochemical scores; PM: Particulate matter; OVA: Ovalbumin; SD: Standard deviation; ANOVA: Analysis of variance; LSD: Least significant difference.