Fig. 2From: Frankincense essential oil nanoemulsion specifically induces lung cancer apoptosis and inhibits survival pathwaysCytotoxicity of different doses (0–100 µg/ml) of the tested formulas against lung cancer cell lines (A549) versus normal WI-38 cells. Cells were incubated with these formulas for 4 h (A), 24 h (B), 48 h (C), and 72 h (D)Back to article page