A: HCT15 cells were treated with 1xIC50 EGCG (E), 10 μM 5-FU (F), or both (F+E) for 24 h. Immunoblots for phosphorylated/total ERK, Bcl-xL, and XIAP in whole cell protein extracts from HCT15 cells are shown. Loading control: β-Actin. Bands were quantified and results are expressed as a percentage of control. * p<0.05, ** p<0.01 vs. control. B: A549 cells were treated with 1xIC50 EGCG (E), 0.25 μM doxorubicin (D), or both (D+E) for 24 h. Immunoblots for phosphorylated/total ERK, Bcl-xL, and XIAP in whole cell protein extracts from A549 cells are shown. Loading control: β-Actin. Bands were quantified and results are expressed as a percentage of control. * p<0.05, ** p<0.01 vs. control.