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. 2019 Jun 24;24(12):2322. doi: 10.3390/molecules24122322

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© 2019 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 (http://creativecommons.org/licenses/by/4.0/).

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(a) Appearance of empty niosomes and quercetin-niosomes; (b) Transmission electron microscopy (TEM) image of blank niosomes; (c) TEM image of quercetin-niosomes.