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. 2023 Feb 23;13(5):821. doi: 10.3390/nano13050821

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© 2023 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 (https://creativecommons.org/licenses/by/4.0/).

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Antibacterial activity of AgNP-PNS by agar diffusion test against P. aeruginosa PAO1 ((a) not irradiated (IR), (b) irradiated), and S. mutans ((d) not irradiated, (e) irradiated). Tables (c) and (f) report the values of the antibacterial mean zone of inhibition for PAO1 and S. mutans, respectively. Bacterial cultures in the absence of AgNP-PNS or PNS were used as positive controls (CTL). For each sample, three different experiments were conducted and the results expressed as the mean of the values obtained (mean ± SD).