Fig. 1.

Cell cycle analysis in PEITC-treated cells. a, b MDA-MB-231 cells or c, d MCF7 cells were treated with PEITC (10 or 20 μM) or DMSO as a control for a, c 24 or b, d 48 h. The proportion of cells in different cell cycle phases was determined using propidium iodide staining and flow cytometry. Data shown are means ± SD derived from three independent experiments. Statistically significant differences between DMSO and PEITC treated cells are indicated (*p < 0.05; **p < 0.005)