Abstract:Immunological assays to detect SARS-CoV-2 Spike receptor binding domain antigen seroconversion in humans are important tools to monitor the levels of protecting antibodies in the population in response to infection and/or immunization. Here we describe a simple, low cost and high throughput Ni2+ magnetic bead immunoassay to detect human IgG reactive to Spike S1 RBD Receptor Binding Domain produced in Escherichia coli. A 6xHis tagged Spike S1 RBD was expressed in E. coli and purified by affinity chromatography.… Show more
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