The primate adrenal zona reticularis is defined by expression of cytochrome b5, 17alpha-hydroxylase/17,20-lyase cytochrome P450 (P450c17) and NADPH-cytochrome P450 reductase (reductase) but not 3β-hydroxysteroid dehydrogenase/delta5-4 isomerase (3β-HSD) - Mapes,S.; Corbin,C.J.; Tarantal,A.; Conley,A. (J Clin Endocrinol Metab, 1999)