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. 2022 Jul 18;33(8):60. doi: 10.1007/s10856-022-06681-4

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© The Author(s) 2022

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

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Fig. 7 — Hydrogel-hUMSCs combined treatment promotes angiogenesis and re-epithelialization. Expression of CD31, α-SMA and VEGF at the wound sites of rats in the control, the hydrogel and hUMSCs alone or combined group 14 days after the operation, detected by immunofluorescence or IHC. High magnification corresponds to boxed area in the low-magnification images