Bex induces apoptotic cell death. (A) Cells were treated with 100 µg/ml Bex for 24 h and subjected to Annexin V-fluorescein isothiocyanate and 7-AAD staining. (B) MDA-MB-231 cells were treated with 100 µg/ml Bex for 24 h and subjected to western blot analysis. Bex, barley grass extract; 7-AAD, 7-aminoactinomycin D; Bax, BCL2 associated X, apoptosis regulator; Bcl-2, B-cell lymphoma 2; PARP, poly (ADP-ribose) polymerase.