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Time course of key biomarkers in SARS-CoV-2 infection, adapted from BioRender.com. The solid green line represents a typical trajectory of the RT-PCR data for viral nucleic acid from respiratory samples, while the broken purple line indicates a typical virus-specific antibody trajectory in peripheral blood, relative to time of infection, as indicated. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
