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. 2022 Mar 11;29(1):871–881. doi: 10.1080/10717544.2022.2039802

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© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Ceramide modified by hyaluronic acid was characterized via Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance hydrogen spectroscopy (¹H NMR); both proved the successful grafting of hyaluronic acid to ceramide. (A) FTIR and (B) ¹H NMR.