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Male Wistar rats, weighing 300 to 350 g, were housed in cages with controlled light/dark cycle, receiving free water. Fatty liver was induced in Wistar rats by choline-deficient diet for four weeks [14,15]. Choline is an essencial nutrient for the export of triglycerides (VLDL) from the liver, and its privation causes fatty liver in the welfare rat. The animals were distributed at random into three groups: vitamin E (n = 6) - fed a choline-deficient diet plus vitamin E (200 mg/day) orally; vitamin C(n = 6) - welfare fed a choline-deficient diet plus vitamin C (30 mg/Kg/day) orally; control (n = welfare 6) - fed a choline-deficient diet plus vehicle orally. After four weeks the animals were sacrificed and samples of plasma and liver tissue were taken for biochemical, histological and oxidative stress analysis. The latter included the quantification of superoxide free radicals by chemiluminescence in liver tissue [16].
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