The primate adrenal zona reticularis is defined by the expression of cytochrome b5, 17α hydroxylase/17,20 lyase cytochrome P450 (P450C17) and NADPH-cytochrome P450 reductase but not 3 beta-hydroxysteroid dehydrogenase/Δ5-4 isomerase (3βHSD) - Mapes,S.; Corbin,C.J.; Tarantal,A.; Conley,A. (J Clin Endocrinol Metab, 1999)