SPECC1 and COVID-19: As mentioned above, we identified seven stable SARS-CoV-2 proteins, NSP2, NSP5, NSP10, NSP15, spike, M, and N. To globally profile the antibody response against these seven proteins from the plasma of COVID-19 patients, we collected plasma samples from 19 COVID-19 patients and determined the corresponding IgG antibody titers using an indirect enzyme-linked immunosorbent assay (ELISA).