Androgen is one of the five major classes of steroid hormones, essential in the development of secondary male sex characteristics. Androgens have vital actions on the brain, and are responsible for development of male sexual behaviour and muscle mass, as well as maintenance of the testes .
- ↑ Berg, JM., Tymoczo, JL., Stryer, L., and Gatto, Jr, Gj. (2012). Biochemistry. 7th ed. New York: W. H. Freeman and Company. 808 - 812.
- ↑ Harvey, RA. and Ferrier, Dr. (2011). Lippincott's Illustrated Reviews: Biochemistry. 5th ed. Philadelphia: Wolters Kluwer. 237 - 239.