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Cell viability of A549 cells treated with different concentrations (0–800 µg/mL) of the RA-RF or PMFF (A) and pre-treated with RA-RF (0–200 µg/mL) following by adding 200 µg/mL of the PMFF (B). Cell apoptosis and necrosis of A549 cells treated with PMFF (200 µg/mL) in the presence of RA-RF (0–200 µg/mL) for 24 h (C). The mean ± standard error of the mean (SEM); *** p < 0.001. The data were independently performed in triplicate.
