A375 and C8161 cells were infected and uninfected with NDV/FMW (MOI = 1) for 48 h, then the cell were collected and diluted in Trypan blue dye by preparing a 1:1 dilution of the cell suspension using a 0.4% Trypan blue solution for 2 min at room temperature. Cell viability was analyzed using hemocytometer. The ratio of unstained cell numbers to total cell numbers was reported as the viability percentage for each cell category.
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