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. 2021 Aug 17;7:67. doi: 10.1038/s41421-021-00309-7

Fig. 4. Correlations between neutralization titers (authentic virus) and IgG responses to SARS-CoV-2 proteins or peptides.

Fig. 4

a Correlation of the NT50 (authentic virus) and NT50 (pseudovirus). b–d Correlations of the NT50 (authentic virus) to ELISA-based assays, i.e., anti-RBD total antibody (TAb, i.e., IgG, IgM, and IgA) (b), anti-RBD IgG (c), and anti-RBD IgM (d). e Correlation coefficients for the NT50 (authentic virus) and IgG responses to the SARS-CoV-2 proteins. f–h Correlation of the NT50 (authentic virus) to IgG responses against the S protein (f), S1 subunit (g), and RBD (h). i–k Correlation of the NT50 (authentic virus) to IgG responses to all the 197 peptides (i), and specifically to S1-5 (j), and S2-22 (k).