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. 2021 May 27;19(6):787–812. doi: 10.2174/1570159X18666200831160627

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© 2021 Bentham Science Publishers

This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

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Fig. (1) — Number of publications based on the bibliographical results found in this review, according to the type of nanosystem: A (Lipid-based systems); B (polymeric nanosystems) and C (inorganic nanosystems); ME = microemulsions; NE = nanoemulsions; SLN = solid lipid nanoparticles; NLC = nanostructured lipid carriers; PN = polymeric nanoparticles; PM = polymeric micelles; HN = hybrid nanoparticles, MN = metallic nanoparticles and; MSNP = mesoporous silica nanoparticles. (A higher resolution / colour version of this figure is available in the electronic copy of the article).