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. 2021 Sep 15;13(9):1476. doi: 10.3390/pharmaceutics13091476

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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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Column 1: diffusion of nile red-loaded micelles in hydrogels at 0, 3 and 24 h from deposition. The black mark on the tube represents the separation surface between the hydrogel and the nile red solution deposed (for a better understanding see Figure S1). Column 2: hydrogels appearance after hydration of polymers in IMQ-loaded TO20 micelles and correspondent pH values (mean ± SD). Hydrogel are indicated as HEC (hydroxyethyl cellulose), XG (xanthan gum), CMC (sodium carboxymethylcellulose), CP (Carbopol^®), HA (sodium hyaluronate) and PVA (polyvinyl alcohol).