we studied the ontogeny and tissue specificity of expression of the genes for three steroidogenic enzymes : p450scc ( the cholesterol side-chain cleavage enzyme ) , p450c17 ( 17 alpha-hydroxylase/17,20-lyase ) , and p450c21 ( 21-hydroxylase ) in the human fetus .
C1413858
p450c17
C0038302
17