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. 2022 Jan 21;10(5):1356–1364.e2. doi: 10.1016/j.jaip.2021.12.038

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Figure E3 — Two left-most panels: serologic status for anti–SARS-CoV-2 IgA and IgG antibodies, determined in an S-flow assay. The dashed line indicates the positivity threshold. Third panel: Percentage IgG neutralizing ability, determined in a viral pseudoparticle assay. Fourth panel: relationship between the IgG titer and the neutralizing activity.