Figure 1.

CPE assay. VeroE6/TMPRSS2 cell monolayers were cultured with the SARS‐CoV‐2 Wk521 strain ¹⁰ prepared in culture media containing different concentrations of drugs for 50 hr (MOI = 0.01). After the 50 hr incubation period, the cell monolayers were stained with crystal violet. Blue bars indicate the minimum drug concentration level by which viral CPE was blocked and cells remained attached after crystal violet staining (antiviral level). Red bars indicate the minimum drug concentration level by which the drugs showed cytotoxicity and poor crystal violet staining (cytotoxicity level)