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. 2019 Nov 15;9(11):1626. doi: 10.3390/nano9111626

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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) Transmission electron microscopy (TEM) micrograph and (b) size distribution of the Fe₃O₄@PAA nanoparticles. The size distribution was performed by measuring a sample consisting of 486 magnetic nanoparticles with the ImageJ software.