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. 2022 Sep 26;27(19):6361. doi: 10.3390/molecules27196361

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Histological analysis of wounds on the dorsum of mice by H&E staining after treatment with no bFGF, spraying bFGF, and hydrogel dressing containing bFGF for up to 10 days. (A) normal skin, (B) Blank, (C) bFGF-Sol, (D) bFGF-Gel. Scale bar =100 μm. (Green arrows: fibroblasts; black arrows: collagenous fibers; Red arrows: blood capillaries.). Masson staining images from day 10 post-operation. (E) normal skin, (F) Blank, (G) bFGF, (H) bFGF-Gel, (I) relative content of collagen in different groups compared with normal skin. Scale bar =100 μm.