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Cell viability as a function of MP concentration. Two-milliliter cell suspensions containing 12 × 106 cells were incubated with either 0, 0.25, 2.5, or 25 μm MP. After 16 min of incubation with MP, the cells were incubated with Evan's blue dye for assessment of viability. Percentage cell death represents the mean of three experiments. se bars are shown.
