DEMONSTRATION OF 16α-HYDROXYLASE IN THE HUMAN OVARY*†

Abstract
The presence of 16[alpha]-hydroxylase in the human ovary was demonstrated by conversion of 4-C14-progesterone to 16a-hydroxyprogesterone in incubations with tissue minces. Increased 16-hydroxylase activity was found in tissues abundant in follicular and thecal elements. There is suggestive evidence that Stein-Leventhal ovarian tissue contains more enzymatic activity than does normal ovarian tissue.