Antioxidant defenses enzyme activity 10 Animals 8 Oxidative stress 8 antioxidant 8 article 8 nonhuman 8 pollution effect 8 Diplodon chilensis 6 Glutathione 6 Superoxide Dismutase 6 animal tissue 6 controlled study 6 glutathione 6 glutathione transferase 6 oxidation 6 oxidative stress 6 pollution exposure 6 superoxide dismutase 6 Argentina 4 Bacteria (microorganisms) 4 Catalase 4 Cholinesterases 4 Coliform bacteria 4 Copper 4 Escherichia coli 4 Gastropoda 4 Insecticides 4 Lipid Peroxidation 4 Metal bioaccumulation 4