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During petroleum refining, a large number of products are generated which have varying chemical and physical properties. These are known in the industry as petroleum streams. In order to characterize their carcinogenic activity, a number of these commercially produced streams were administered to C3H/HeJ mice in chronic dermal bioassays. The bioassays were(More)
Hydrazine (N2H4) is used as a fuel for missiles and standby power systems of operational military aircraft. Maintenance of missiles and aircraft may result in accidental human exposure to high concentrations for brief periods of time. The purposes of this study were to assess the oncogenic potential of N2H4 in rats and male hamsters exposed to a high(More)
Year-long intermittent exposures of rats, mice, hamsters, and dogs to hydrazine were conducted using concentrations of 0.05, 0.25, 1.0, and 5.0 ppm. Rats were held 18 months postexposure; hamsters, 1 year postexposure; mice, 15 months postexposure; and dogs, 38 months postexposure. Male and female rats exhibited dose-dependent incidences of benign nasal(More)
A subchronic 90-day inhalation study was conducted to determine the toxic effects of decalin, a commonly used industrial solvent. Experimental groups consisting of male and female beagle dogs, male and female Fischer-344 rats, and female C57BL/6 mice were continuously exposed to decalin concentrations of 5 or 50 ppm. An unexposed control group was also(More)
Nine refinery streams were tested in both chronic and initiation/promotion (I/P) skin bioassays. In the chronic bioassay, groups of 50 C3H/HeJ mice received twice weekly applications of 50 microl of test article for at least 2 years. In the initiation phase of the I/P bioassay, groups of CD-1 mice received an initiating dose of 50 microl of test article for(More)
Fluomine is a cobalt chelate of interest in life support systems of high altitude aircraft. Rats, mice, guinea pigs and dogs were exposed to fluomine particles for a six month period on an industrial-type schedule. Chronic exposure of the dust caused a statistically significant decrease in the mean body weights of the test rats when compared to their(More)