Effects of treatment of monosodium glutamate (high, med, low doses), vit. E (high, low doses), Se (high, low doses) and their combinations with MSG on MDA contents in the testis tissues of rats. Data represents the means ± SD of seven samples. (MSG, monosodium glutamate, vit E, vitamin E; H dose, high dose; M dose, medium dose; L dose, low dose; Se, selenium) Values are mean ± SD of seven rats in each group.