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. 2021 Mar 10;11:5558. doi: 10.1038/s41598-021-84840-3

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© The Author(s) 2021

Open Access This 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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Inhibition of SARS-CoV-2 infection by COVID-19 convalescent plasma. (a) Representative fluorescent images showing inhibition of SARS-CoV-2 infection by convalescent patient's plasma. Negative and positive controls of PsV infection into 293 T/ACE2 target cells are shown. (b) Neutralization assays showing that COVID-19 convalescent plasma inhibits SARS-CoV-2 S PsV infection. (c) The dilution factors of patient plasma and their corresponding concentrations of anti-S1 IgG antibodies are shown. The graph in b was created by Prism 6.01 software (https://www.graphpad.com/).