2,2'-Isobutylidene-bis(4,6-dimethylphenol), an antioxidant, was given orally to pregnant Wistar rats by stomach intubation at the dose levels of 5, 15 or 45 mg/kg body weight during days 7 to 17 of gestation, and the effects of the compound on dams and fetal developments were examined. In the dams
Estonian shale oil contains about 25--30% phenols, and their action determines the toxicity of shale oils. The clinical symptoms of intoxication are rather similar, regardless of route of administration. Due to neurotropic action, the coordination of movements is impaired, and clonic and tetanic