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. 2017 Aug 22;7:9056. doi: 10.1038/s41598-017-09021-7

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© The Author(s) 2017

Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Histopathology of representative lung sections stained for fibrosis with Masson’s trichrome. (a) Control whole slide. (b) Control zoomed in. (c) RT whole slide. (d) RT zoomed in. Fibrosis appears in blue. (e) Histopathology fibrosis score quantified with percent of blue pixels for each group. There is a statistical difference between Control and all RT groups and between RT + MSC-IV and RT + MSC-ET. (f) Plot of histopathology vs CT fibrosis score. Each rat is one point and the line represents the linear regression fit.