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Bex-induced apoptosis requires intracellular reactive oxygen species production. Cells were treated with Bex for 24 h with or without NAC, and then subjected to Annexin V-fluorescein isothiocyanate and 7-AAD staining. Bex, barley grass extract; NAC, N-acetyl-L-cystein; 7-AAD, 7-aminoactinomycin D.
