c57b1 mice were given orally one , two , or three doses of ritinyl palmitate or retinoic acid on day 11 , 12 , 13 , or 14 or pregnancy to determine 1 ) if it was possible to produce cleft palate at any time during palatal development of the mouse embryo , and 2 ) the maternal and fetal levels of vitamin a associated with the production of clefts .
C0040845
retinoic acid
C0032961
pregnancy