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PCBLs, OPAs and PPAs decrease cell viability and increase apoptosis of OVCAR-3 human ovarian cancer cells. (A) Cell viability was determined using a tetrazolium dye assay. (B) Hoechst 33342 staining of OVCAR-3 cells was detected by fluorescence microscopy (magnification, ×400). *P<0.05 compared with the control, or between specific groups. PCBL, Chinese bayberry leaf prodelphinidin extract; OPA, oligomeric proanthocyanidin; PPA, polymeric proanthocyanidins.
