Figure 3: Viability of MCF-10A (A) and MCF-7 cells (B) exposed to different concentrations of Arrabidaea chica extract nanoemulsion (ACE-NE) for 15 minutes, and then kept in the dark (solid line) or irradiated (λ 660 nm, 4.5 J/cm2, discontinuous line). Cells viability was evaluated by MTT method 24 hours after treatments. **p<0.01 for dark vs irradiated; ***p<0.001 for dark vs irradiated.