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. 2021 Feb 13;11(2):481. doi: 10.3390/nano11020481

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© 2021 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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Initial state t0 vs. final state tf of the MCTS. In order to assess the effectiveness of the bio-indicator, a comparison between t0 and tf is inevitable for the understanding of the impact of NPs on the living in vitro 3D model.