the regulation of 3 beta-hydroxysteroid dehydrogenase , delta 4,5-isomerase ( 3 beta-hsd ) and hydroxysteroid sulfotransferase ( hst ) activities by acth and thyroid hormones was investigated in cell cultures from the fetal zone or definitive zone of the human fetal adrenal cortex , using a serum-free , defined medium .
C0919466
hst
C0086418
human