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Crude oil has been described as a complex mixture of over 6000 potentially different hydrocarbons and metal (Edwards, 1989) and the chemical composition varies between geologic formations (Coppock et al., 1995). Exposure of humans and animal to crude oil, which is increasing in terms of the environmental levels, and application to body, may be toxic. Crude oil is used in folkloric medicine in the Niger-delta area of Nigeria for the treatment of various ailments including stomach up-set, wound, and burns (Orisakwe, et al., 2000). The route of administration is mostly oral and external application for burns and wounds. The ingestion of petroleum hydrocarbon has been reported to induce oxidative stress (Val and Almeida-Val, 1999) through the generation of free radical (Achuba and Osakwe, 2003). It has been established that free radical generation with subsequent oxidative modification leads to lipid peroxidation (Halliwell, 1994) that damages critical cellular macromolecules such as DNA, lipids and proteins (Breimer 1990; Romero et al...