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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 (http://creativecommons.org/licenses/by/4.0/).
HE staining (a) and Masson’s trichrome staining (b) of wound healing in the groups of PLGA, PLGA-CS and PLGA-HACC fibrous membranes. The scale bar is 50 μm.