Fig. 2. Infection of VeroE6 cells highly expressing endogenous ACE2 with Wild-Type, Delta, and Omicron strains. (a) Percent cell viability of infected cells calculated using LDH released in the supernatant from triplicate replicates. All values are normalized to uninfected cell controls. (b) Cycle quantification (Cq) values measured by RT-qPCR in supernatant from infected cells 5 days post-infection. (c) Monolayer viability was confirmed by visual inspection of cultures by brightfield microscopy. Images of cultures that bracket CPE breakpoints are shown. (*P<0.05, **P<0.01, ***P<0.001).
