female hooded rats were injected intraperitoneally on the 14th day of pregnancy with dehydroheliotridine ( dhh ) , a pyrrolic metabolite of pyrrolizidine alkaloids , at 30 to 90 mg/kg , or with the alkaloid heliotrine at 200 mg/kg and the effects on the embryos were evaluated on the 20th day .
C0034335
pyrrolizidine
C0002062
alkaloid