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. 2022 Sep 27;251:38–46. doi: 10.1016/j.imlet.2022.09.007

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© 2022 Published by Elsevier B.V. on behalf of European Federation of Immunological Societies.

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Fig 4 — Correlation of SARS-CoV-2 neutralizing antibody titer with the frequency of anti-SARS-CoV-2 S1 protein-reactive INF-γ⁺CD4⁺ T cells detected in convalescent COVID-19 patients.

Titer of SARS-CoV-2 neutralizing antibodies were compared with the frequency (Fig. 3) of anti-SARS-CoV-2 S1 protein-reactive INF-γ⁺ CD4⁺ T cells detected in convalescent COVID-19 patients. Regression lines, coefficient of variations (r²) and statistical significance (p-value) are depicted in the figure. Each symbol represents a single measurement.