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Naringenin and ABT-737 induced cleavage of capase-3 and PARP. (A) Western blots of SG7901 cells treated 40 µM naringenin and/or 5 µM ABT-737 for 48 h, detecting the protein expression levels of caspase-3 and PARP. GAPDH was included as a loading control. (B) Relative pixel density of cleaved caspase-3 and PARP was measured and normalized against GAPDH. PARP, poly ADP-ribose polymerase; GAPDH, glyceraldehyde-3-phosphate dehydrogenase. *P<0.05, **P<0.01 and ***P<0.001.
