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. 2020 Feb 21;12(2):186. doi: 10.3390/pharmaceutics12020186

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© 2020 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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Vehicles characterization: (A) Nanoparticle Tracking Analysis (NTA) of liposomes, polymeric nanoparticles and extracellular vesicles. (B) Transmission electron cryomicroscopy images of the three vehicles showing correlation in size with NTA. (C) Levels of miR-219a-5p in liposomes (219-Lp), nanoparticles (219-Np) and Extracellular vesicles (219-EVs). Liposomes are the most enriched vehicles followed by nanoparticles and finally EVs.