Fig. 4From: Multiple cellular effects of leaf extracts from Parinari curatellifolia The effects of combining H2O2 or menadione and 25 μg/ml of P. curatellifolia water leaf extract on NO production. * denotes level of significance compared to the control of cells alone (p ≤ 0.05). The concentrations of H2O2 and menadione were 100 μM in each caseBack to article page