Fig. 3

The differential expression of a Superoxide dismutase (SOD1), b Catalase (CAT), c Cellular Glutathione peroxidase 1 (GPX1), d Cellular Glutathione peroxidase 7 (GPX7), e interleukins (IL-6) and f interferon α (IFN-α) genes expressions in the brain tissue of Japanese quail fed on diets supplemented with different levels of ZnO-NPs (15, 30, 60 mg/kg diet), β-actin gene was an internal reference gene. The data expressed as mean ± SEM