the possible role of 5 alpha-reduction of steroids in the sexual differentiation of guinea pigs was determined by treating pregnant guinea pigs with a 5 alpha-reductase activity ( 5 alpha ra ) inhibitor ( 17 beta-n , n-diethylcarbamoyl-4-methyl-4-aza-5 alpha-androstan-3-one , 4ma , 10 mg/day ) from day 30 to 55 of gestation .
C0004482
aza
C0032961
gestation