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. 2022 Jan 13;23(2):842. doi: 10.3390/ijms23020842

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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/).

PMC Copyright notice

(a) Scheme of hyaluronic acid (HA) modification by pendant pyrrole moieties to produce PyHA and (b) schematic drawing of the oxidative polymerization of pyrrole in the presence of PyHA. Reprinted with permission from reference [32].