maternal administration of a single dose of retinoic acid ( vitamin a acid , 100 mg/kg ) on either the 11th , 11 1/2 , 12th , 12 1/2 , 13th or 13 1/2 day of gestation produced phocomelia or partial phocomelia in icr/dub fetuses .
C0040845
vitamin a acid
C0032961
gestation