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. 2017 Jun 30;7(7):162. doi: 10.3390/nano7070162

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© 2017 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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TEM and cryoTEM images of the nanoparticles (NPs); (a) Native magnetic mesoporous silica core-shell nanoparticles (Fe₃O₄@MSN); (b) polyethylene glycol (PEG) Fe₃O₄@MSN; (c) 1,2-dimyristoyl-sn-glycero-3phosphocholine (DMPC) Fe₃O₄@MSN observed by cryoTEM.