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Production of steroidal hormones from cholesterol, including androstenedione production by the enzyme 3ß-HSD2 in both adrenal glands (A) and testis (B), as well as the production other essential androgens throughout the enzymatic reaction. Androstenedione is highlighted in pink in both cycles. Enzyme codes are: Steroidogenic Acute Regulatory protein (StAR), Cytochromes P450, Sulfotransferase (SULTs), 3-β hydroxysteroid dehydrogenase (3β-HSD), and aromatase cytochrome P450 (P450aro).
