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. 2019 May 22;14:146. doi: 10.1186/s13018-019-1164-3

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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. 5 — Immunohistochemical staining of CD34 in PDCs-CGF complex (magnification, × 400). PDCs were dispersedly distributed among the CGF fibrin matrix. CD34-positive cells (arrow) are visible (a, b). Scale bar = 100 μm. CD cluster of differentiation, PDCs periosteum-derived cells, CGF concentrated growth factor. All experiments were performed independently (each experiment used PDCs and CGF from a different rabbit) and repeated three times