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. 2021 Aug 18;11:16783. doi: 10.1038/s41598-021-96271-1

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© The Author(s) 2021

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

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Histological findings after 12 weeks; Alizarin Red stain of the bone defects area repaired by Col (A) and Col-rGO (B) scaffolds. Images for each group were illustrated from three different parts of the same location. The dotted line indicates the border between intact bone and scaffolds. Scale bar 100 µm.