Figure 1
The effect of dandelion or ATRA and dandelion/ATRA co-treatment on MCF‑7 cell viability. Viability was assessed with the MTT method after the exposure to the increasing concentrations of components for 48 h. The data are the mean ± SD values of triplicate individual determinations. The lowest cytotoxic concentrations of dandelion extract and ATRA were observed in concentrations of 1 mg/ml and 1 µM, respectively. Also, the highest cytotoxic concentrations of dandelion extract and ATRA on cell viability occurred in concentrations of 10 mg/ml and 100 µM, respectively. To evaluate the effect of dandelion/ATRA co-treatment on cell viability, the concentration of ATRA was fixed at 40 µM and the concentration of dandelion was considered variable between 0 and 1.5 mg/ml (*P < 0.05).
