Fig. (1) Dose-dependent effect of the antioxidant compounds on PQ toxicity. Flies fed with different concentrations of antioxidants (4-Hydroxyisophthalic acid-DHA-I, Nicotinamide-NA, Ellagic AcidEA, Quercetin-Que) were exposed to 20mM PQ (A-D) and mortality was recorded after 24h. All the antioxidant compounds exhibited dose-dependent protection against PQ toxicity. Values are mean±S.E. (n=6; 10 flies per replicate) and bars denoted by identical lowercase alphabets (a–c) indicate no significant difference, whereas, values denoted by different alphabets indicate a statistically significant difference (p<0.05).