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. 2021 Aug 31;11(9):2256. doi: 10.3390/nano11092256

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© 2021 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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Surface analysis by FTIR of the mixture of GelMA and alginate with different concentrations of alginate. (a) Spectra of the mixtures with 2% (m/v) alginate, (b) spectra of the mixtures with 1% (m/v) alginate, and (c) spectra of the mixtures with 0.5% (m/v) alginate.