Fig. 1From: Comparison of aqueous, polyethylene glycol-aqueous and ethanolic propolis extracts: antioxidant and mitochondria modulating propertiesEffect of propolis extracts on H2O2 concentration in cell culture medium. Different concentrations (1–15 μg/ml PC) of AqEP, Pg-AqEP and EEP were added to wells filled with HBSS and enriched with 50 μM H2O2. Immediately before measurement horseradish peroxidase and Amplex Red dye were added and fluorescence intensity were measured. Data are presented as means of percentage of the control cells ± SE (n = 5). * p < 0.05 versus controlBack to article page