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. 2017 Sep 7;8(9):e3042. doi: 10.1038/cddis.2017.429

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Copyright © 2017 The Author(s)

Cell Death and Disease is an open-access journal published by Nature Publishing Group. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Histological evaluation of the defect area at 6 weeks after surgery in each group. (a–d) HE staining. Scale bar=500 μm. (e–h) Safranin O and fast green staining. (i–l) Masson staining. All the data were confirmed by three repeated tests. Scale bar=500 μm