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. 2020 May 24;10(5):1001. doi: 10.3390/nano10051001

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© 2020 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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Analysis of fungal cell viability by fluorescence microscopy. F. oxysporum spores (A) non-treated or (B) treated with rGO-CuO NPs were stained with DAPI (stains live spores in blue) and PI (stains dead spores in red) and visualized.