Androgen, also named androgenic hormones or testoids, could be the generic phrase for just about any organically grown or artificial compound, normally a steroid hormone, that stimulates or controls the enlargement and upkeep of male qualities in vertebrates by binding to androgen receptors. This consists of the actions belonging toward accessory male sex organs and enlargement of male secondary sex characteristics.

Androgen Insensitivity Syndrome: Females with male XY genetics but inability to respond to testosterone.