Petroleum and its transformation products accumulated in soil along multiple trophic chains enter the human body, which increases the risk of environmentally induced diseases. A thirty-day experiment studied the cutaneous effect of different doses (4250, 850, and 425 mg/kg) of sunflower oil-emulsified petroleum. Its sensitizing and allergic effects were studied on albino guinea pigs. The activity of N-acetyl-beta-D-glucosaminidase and catalase was determined in the sera of non-inbred male albino rats. Petroleum given in a dose of 4250 mg/kg was found to have a negative effect. When its bioeffect occurred, a protective adaptive response of the body revealed in early stages gave way to tension of its adaptive capacities.
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