Feminine Behavior in Neonatally Castrated and Estrogen-Treated Male Rats

Male rats castrated within 4 days after birth are behaviorally feminized. On the other hand, intact or castrated males given estrogen neonatally show little estrous behavior in adulthood. Thus, feminization is induced by lack of neonatal androgen rather than by the presence of estrogen. Estrogen adm...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1965-01, Vol.147 (3655), p.306-307
Hauptverfasser: Feder, Harvey H., Whalen, Richard E.
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creator Feder, Harvey H.
Whalen, Richard E.
description Male rats castrated within 4 days after birth are behaviorally feminized. On the other hand, intact or castrated males given estrogen neonatally show little estrous behavior in adulthood. Thus, feminization is induced by lack of neonatal androgen rather than by the presence of estrogen. Estrogen administered to newborn rats suppresses feminization.
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source Science Magazine; Jstor Complete Legacy
subjects Adulthood
Androgens
Estrogens
Feminization
Lordosis
Male animals
Mating behavior
Mental stimulation
Old Medline
Primates
Reproduction
title Feminine Behavior in Neonatally Castrated and Estrogen-Treated Male Rats
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