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. 2021 Aug 16;9(8):1744. doi: 10.3390/microorganisms9081744

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

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Reproducibility of the SARS-CoV-2 spike protein pseudovirus-based neutralization assay: PBNA for 6 serum samples from SARS-CoV-2-challenged NHP, 2 positive and 1 unchallenged NHP controls was conducted in two independent experiments (11 and 18 June 2021). Log transformed PBNI₅₀ from each experiment is plotted on the X- and Y-axis, respectively. The correlation of R² = 0.96, with the trend line between the PBNI₅₀ from both the experiments, is shown by the dotted line in the figure.