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. 2022 Jan 7;12:263. doi: 10.1038/s41598-021-04360-y

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Effect of PAW concentration on SARS-CoV-2 infectivity. A fixed amount of virus was incubated for 30 min with dilutions of PAW in distilled water or in PBS. The virus mixtures were then titrated by plaque assay. The data was used for non-linear curve fitting (inset) to estimate the concentration of PAW that reduces by half the virus titer. Percentages refer to the final concentration of PAW in the mixtures that were titrated in cell cultures. Generated with INKSCAPE 1.1 (www.inkscape.org).