therefore , the following enzymes are present in these cells : 5 alpha-reductase , 17 beta-hydroxysteroid dehydrogenase , 3 alpha-hydroxysteroid dehydrogenase , 3 beta-hydroxysteroid dehydrogenase , and unknown hydroxylase ( s ) .
C0048751
3 alpha-hydroxysteroid dehydrogenase
C0000413
3 beta-hydroxysteroid