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Novel role of progestin signaling in fish spermatogenesis

Cytochrome P450, family 17, subfamily A, polypeptide 1 (cyp17a1) is a critical enzyme involved in gonadal steroidogenesis, including androgen and estrogen production. Among sex steroids, androgen signaling disruption is known ...

Two genes regulate social dominance

Rank in social hierarchy is a condition not solely claimed by humans. In the animal kingdom, male peacocks exhibit brightly colored plumes to illustrate dominance, and underwater, male fish show pops of bright colors to do ...

Testosterone key to new bird bang theory

New research from a Wake Forest University biologist who studies animal behavior suggests that evolution is hard at work when it comes to the acrobatic courtship dances of a tropical bird species.

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Androgen

Androgen, also called androgenic hormone or testoid, is the generic term for any natural or synthetic compound, usually a steroid hormone, that stimulates or controls the development and maintenance of male characteristics in vertebrates by binding to androgen receptors. This includes the activity of the accessory male sex organs and development of male secondary sex characteristics. Androgens were first discovered in 1936. Androgens are also the original anabolic steroids and the precursor of all estrogens, the female sex hormones. The primary and most well-known androgen is testosterone, other less important androgens are dihydrotestosterone and androstenedione.

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