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. 2019 May 29;20:257. doi: 10.1186/s12891-019-2644-7

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© The Author(s). 2019

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. 8 — Macro and histological evaluation of the osteochondral defect healing in the control, HG and HG-BMSCs groups at 12 weeks after surgery. a The macro observation. b ICRS macroscopic assessment scoring. c H&E staining. d Safranin O staining, e Mankin Score. f Col2 staining. g Col2 content ratio quantification