Malondialdehyde level in BCNU-exposed group was higher than those in control groups and melatonin decreased malondialdehyde levels in BCNU group ( P < 0.01 ) , while there were no significant differences in the superoxide dismutase levels between these groups .
B-ChemicalEntity O O B-ChemicalEntity O O O O O O O O O B-ChemicalEntity O B-ChemicalEntity O O B-ChemicalEntity O O O O O O O O O O O O O O O B-GeneOrGeneProduct I-GeneOrGeneProduct O O O O O