A) A549 cells were mock infected or infected with vMyx-WT, vMyx-MT5KO, vMyx-148–150KO, or vMyx-ANKsKO viruses and cell membrane integrity, as a surrogate for cell death, was detected by trypan blue exclusion assay. Values are expressed as the mean percentage of trypan blue-positive cells (± standard deviation [SD]) from triplicate experiments. B) Cell viability as assessed by mitochondrial function levels following infection was measured by MTT assay. Results are displayed as mean absorbance (± standard deviation [SD]) from triplicate experiments.