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Several studies were conducted in cities of Liaoning Province, one of the areas of China with heavy concentrations of industry, to investigate the effects of life-style factors and environmental pollutants on lung cancer causation. A case-control study involving 1249 lung cancer patients and 1345 population-based controls was conducted in 1985-1988 in Shenyang, the capital of Liaoning. Cigarette...
The squamous cell carcinoma of lung was induced with methylcholanthrene (MCA) in iodized oil in Wistar rats. During the development of the cancer, the animals were given superoxide dismutase (SOD) or its inhibitor diethyldithiocarbamete (DDC). In DDC group, 3 out of 50 rats developed cancer and 4 developed atypical hyperplasia of bronchial epithelium within 35 to 40 days. In SOD group, no cancer...
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