Carcinogenicity of diesel exhaust as tested in strain a mice |
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Authors: | John G. Orthoefer Wellington Moore Dale Kraemer Freda Truman Walden Crocker You Yen Yang |
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Abstract: | Groups of strain A mice were exposed to diesel exhaust by inhalation and diesel particulate by intraperitoneal injection. The animals were exposed from seven to eight weeks and then sacrificed 26–30 weeks postexposure. Other animals were exposed for up to seven months by the inhalation route. Some animals were promoted using urethane at a dose below which tumors would occur. There was no increase in incidence of pulmonary adenomas in the animals exposed to either diesel exhaust or diesel particulate over the control animals. In the animals which were promoted using urethane at a low dose, there was a significant increase in pulmonary adenomas. Diesel particulate was found in the lungs and bronchial lymph nodes of animals exposed to diesel exhaust 26–30 weeks after cessation of exposure. |
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