Sexual dimorphism in the parastrial nucleus of the rat preoptic area.
This work investigates the possible existence of sex differences in the volume of the parastrial nucleus (PSN), a component of the preoptic area in the rat. The effects of postnatal (on day 1 after birth) male orchidectomy and female androgenization on this nucleus were studied. The volume of the PSN was greater in the control females than in the control males and postnatal treatments reversed this sexual dimorphism.
del Abril
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Departamento de Psicobiología, Universidad Nacional de Educación a Distancia, Ciudad Universitaria, Madrid, Spain.
Segovia
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Guillamón
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D000818:Animals; D005260:Female; D008297:Male; D011301:Preoptic Area / Q000166:cytology / Q000187:drug effects / Q000502:physiology*; D051381:Rats; D011919:Rats, Inbred Strains; D012727:Sex Characteristics; D013739:Testosterone / Q000494:pharmacology / Q000502:physiology*
D013739:Testosterone