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. 2023 May 2;9(5):376. doi: 10.3390/gels9050376

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© 2023 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/).

PMC Copyright notice

Scheme 2 — Illustrative representation of proteins from ECM: collagen [286], keratin [287], tropoelastin [288]. Structure of tropoelastin was adapted with permission from [288], copyright 2020, Elsevier.