All cell lines treated with beta-carotene presented different behaviors when compared to lycopene-treated cells. After 48 h of treatment, beta-carotene caused significant changes in cell viability of the three cell lines. The reduction was in the order of 40% in the MCF-7 cell line (Figure 2A), 30% in MDA-MB-235 cells (Figure 2B) and 70% in MDA-MB231 cells (Figure 2C) when treated with 10 μM. After