Fig. 1

Piceatannol induces apoptosis of melanoma cells. (1) Effects of different concentrations of piceatannol on cell growth of WM266-4 (a) and A2058 (b); (2) Piceatannol increases apoptosis of WM266-4 (c) or A2058 (d) cells, as measured by flow cytometry; (3) Protein level of Bcl-2, Bax and activated caspase-3 (p17) in WM266-4 (e) and A2058 (f) cells incubated with piceatannol, as demonstrated by western blot. *P < 0.05, **P < 0.01 compared to blank control