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Androgen: A male sex hormone that promotes the development and maintenance of the male sex characteristics. The major androgen is testosterone.
Androgens are a group of chemically related sex steroid hormones. Steroids are a special kind of fat molecule with a four-ringed, carbon atom backbone or core, like their cholesterol predecessor. CAPTION: A series of chemical changes turns cholesterol into androgen hormones.he weaker androgens androstenedione and dehydroepiandrosterone (DHEA) occur in small amounts in all vertebrates. Although 11-ketotestosterone is a weak androgen in four-legged vertebrates, it is the most potent variety in bony fishes and sharks.