The architecture of the steroidogenic enzymes in a healthy salivary gland acinar cell. Sex steroids are represented in yellow background and follow a route from the basal part towards apical parts of the acinar cell. STS: steroid sulphatase, SULT: steroid sulfo-transferase, 3β-HSD: 3β-hydroxysteroid dehydrogenase, 17β-HSD: 17β-hydroxys-teroid dehydrogenase. DHEA-sulphate = dehydroepiandrosterone sulphate, TEST = testosterone, DHT = dihydrotestosterone.