Expression of Bax, Bcl-2 and Bcl-xL in ZEA-treated HL-60 cells. Bax, Bcl-2 and Bcl-xL expression (A) and the ratio of Bax/Bcl-xL (B) are from the same sample of cells. Representative data from three independent experiments are shown. The density of bands are plotted as ratio of Bax/Bcl-xL and the results are mean ± S.E.M. from three independent experiments. *, p < 0.05, compared to control.