pregnant mice were injected once with cyclophosphamide ( 20 mg/kg ) or th-r ( n-mustard , 2 mg/kg ) at one of four different day-times ( 07.00 , 13.00 , 19.00 , 01.00 ) on the 12th day of gestation .
C0010583
cyclophosphamide
C0032961
gestation