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. 2016 Dec 12;13:68. doi: 10.1186/s12989-016-0179-8

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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. 5 — Proteins of angiotensin-, and bradykinin- systems respond at the end of eight weeks to PM_2.5 exposure. After eight exposure weeks (4 days/week, 5 h/ day) in kidney rats, we observed an augment in angiotensin-converter enzyme (ACE) and angiotensin-receptor type-I (AT₁R), (a) and (b) respectively. Bradykinin receptor type-1 (B₁R) increase and tissue kallikrein (KLK-1) decrease, (c) and (d) respectively. On boxplot graphyc * indicates statistical differences (p < 0.05)