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. 2022 Oct 15;17:455. doi: 10.1186/s13018-022-03349-1

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© The Author(s) 2022

Open AccessThis 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/. 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 in a credit line to the data.

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Fig. 2 — Histological proliferation, differentiation, and apoptosis of cells in bone A Immunohistochemical expression pattern of Ki67 (nuclear proliferation-associated antigen Ki67), PCNA (proliferating cell nuclear antigen), OCN (osteocalcin), and RUNX2(Runt-related transcription factor 2) in distal femurs of 23-week-old mice (partial positive signals are marked with red arrows) (n = 3). B EdU immunostaining and (C) TUNEL of proximal tibia in 12-week-old mice (n = 3)