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Viability of Caco-2 cells determined by resazurin assay after incubation with indicated concentrations of PMB–PP NPs. Green bars depict viability after incubation for 2 h, blue bars depict viability after incubation for 4 h and red bars depict viability after incubation for 24 h. Data are indicated as means ± SD (n = 3).
