Fig. 1. Results of SARS-CoV-2 antibody detection. A) Levels of antibodies against SARS-CoV-2 in serum from healthy individuals and patients confirmed positive by rRT-PCR. Box-and-whisker plot shows minimum value, first quartile, median, third quartile, and maximum value for each data set. B) ROC analysis of the R-FIND COVID-19 ELISA series.
Abbreviations: SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; rRT-PCR, real-time reverse transcription PCR; COVID-19, coronavirus disease 2019.

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