Figure 4.

Cell viability of A549 (a), SAS (b) and LN229 (c) cells measured after 24 h and 48 h by LDH assay. The viability was calculated using a sample treated with Triton X (cell death = 100%). The data for the samples without stress are shown on the left and the samples with VCR treatment on the right. The vehicle (ethanol) and the NIM-pretreated samples are compared. The diagrams show the mean values and SDs of three independent biological replicates. Tukey’s multiple comparisons test was performed for statistical analysis. * p < 0.05; ** p < 0.01; *** p < 0.001; **** p < 0.0001.