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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 (https://creativecommons.org/licenses/by/4.0/).
Microscopic images of A549 (upper panels) and BJ (lower panels) cells incubated with 62.5, 125, and 250 μg/cm2 ZnF02. Nanoparticles were stained with Prussian Blue.