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. 2018 Jun 20;6:224. doi: 10.3389/fchem.2018.00224

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Copyright © 2018 Tsoukalas, Psimadas, Kastis, Koutoulidis, Harris, Paravatou-Petsotas, Karageorgou, Furenlid, Moulopoulos, Stamopoulos and Bouziotis.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Viability assay on M165 and HEK293 cell lines. Graph of MTT assay after 24 h treatment of M-165 cells and HEK293 cells with various concentrations of NPs. Positive control shows M-165 cells and HEK293 cells without the exposure to NPs. The cell viability is expressed as % cell viability in comparison to a positive control.