Subject:Science and tech Context: Various serological tests to detect antibodies against novel coronavirus (SARS-CoV-2) could improve diagnosis of COVID-19 and be useful tools for epidemiological surveillance. Concept: ELISA ELISA (enzyme-linked immunosorbent assay) is a plate-based assay technique designed for detecting and quantifying peptides, proteins, antibodies and hormones. In an ELISA, an antigen must be immobilized […]