Fig. 3From: In vivo and in vitro inhibition of rat liver glutathione transferases activity by extracts from Combretum zeyheri (Combretaceae) and Parinari curatellifolia (Chrysobalanaceae)The effect of different C. zeyheri doses on the activity of GST compared to the respective control groups. a and b show the effects of the aqueous and ethanol extracts on liver GSTs respectively whilst c and d show the effects of the aqueous and ethanol extracts on kidney GSTs respectively. A significant change in GST specific activity is indicated by ** (p < 0.01)Back to article page