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. 2023 Jul 10;20(10):4040–4049. doi: 10.1111/iwj.14295

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© 2023 The Authors. International Wound Journal published by Medicalhelplines.com Inc and John Wiley & Sons Ltd.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Skin H&E staining results on Days 3, 7 and 14 after laser skin injury in each group. GEL, gelma hydrogel group. EX, human umbilical cord mesenchymal stem cells exosomes group.