Fig. 3From: IgG response to spike protein of SARS-CoV-2 in healthy individuals and potential of intravenous IgG as treatment for COVID-19Seropositivity rates of healthy volunteers (n = 197) to four different synthetic peptides. Note the high seropositivity rates for peptides No. 9 and No. 10, which correspond to the S protein of SARS-CoV-2Back to article page