Fig. 4From: A newly identified linear epitope on non-RBD region of SARS-CoV-2 spike protein improves the serological detection rate of COVID-19 patientsIgG reactive level (S/CO values) of epitope peptides. a The positive IgG reactive level (S/CO values) in convalescent serum samples and the S/CO values of negative sera to four epitope peptides respectively. b Positive IgG S/CO values of four epitope peptides with different clinical type patients. Each set of data was represented by the median (interquartile range)Back to article page