pretreatment with either 40 , 60 , or 80 mg/kg of sodium phenobarbital injected once or twice a day on days 9-12 of pregnancy , or 20 mg/kg/day of methylcholanthrene on days 11-13 of pregnancy , failed to alter significantly the teratogenicity of a subsequent dose of 60 mg/kg of etu given orally on the 13th day of pregnancy .
C0282303
sodium phenobarbital
C0032961
pregnancy