Fig. 2.

The percentage viability of non-malignant HDF-a and HEK293 cells determined with the alamarBlue^® assay. Both cell lines were either untreated (UC) or treated for a 24-h period with 1% DMSO (vehicle), 10 µM L1, 10 µM complex 1 and 100 µM cisplatin (positive control). The percentages were expressed with respect to 1% DMSO (100%). Error bars were constructed based on the Standard Error of the Mean (±SEM) (n = 9). The P value was calculated using the two-tailed Students t test. The treatments with a P value of *P < 0.05 and ***P < 0.001 were deemed significant with respect to DMSO