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. 2020 Nov 20;288:114025. doi: 10.1016/j.jviromet.2020.114025

Fig. 3.

Fig. 3

Correlations between log(NT50) and log(MFI) levels to RBD and NP for IgG, IgA and IgM, as calculated by the nonparametric Spearman correlation test (rs). Seropositivity cut-off levels are indicated by the dashed grey lines.