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. 2016 Dec 9;55(1):450–455. doi: 10.1080/13880209.2016.1247879

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© 2016 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Histopathological images of rat left lung tissues: (a) 15 days after drug treatment. (b) 30 days after drug treatment. (c) 45 days after drug treatment. C, the control group that is not induced into idiopathic pulmonary fibrosis; M, the model group that has been induced into idiopathic pulmonary fibrosis; P, the idiopathic pulmonary fibrosis model group that is treated by pirfenidone; H, the idiopathic pulmonary fibrosis model group that is treated by prednisone; N, the idiopathic pulmonary fibrosis model group that is treated by acetylcysteine. The scale bars were 200 μm.