title: [Evolution of testosterone and dihydrotestosterone in plasma, testicle and ovary of the guinea pig throughout fetal life].
abstract: High testosterone concentrations were found in the plasma of male fetus at the stage of sexual differentiation. Then the fetal testis is the principal source of circulating testosterone; its action on the Wolffian duct would occur by the systemic pathway. In female fetus, androgens were synthesized by the gonad and the relatively high levels found in the plasma have probably another source.
mesh_terms: D000818:Animals; D013196:Dihydrotestosterone / Q000378:metabolism*; D005260:Female; D005312:Fetal Blood / Q000378:metabolism*; D005865:Gestational Age; D006168:Guinea Pigs; D008297:Male; D010053:Ovary / Q000196:embryology* / Q000378:metabolism; D011247:Pregnancy; D012733:Sex Differentiation; D012737:Sex Factors; D013737:Testis / Q000196:embryology* / Q000378:metabolism; D013739:Testosterone / Q000378:metabolism*
chemical_list: D013196:Dihydrotestosterone; D013739:Testosterone
vernacular_title: Evolution des teneurs en testostérone et dihydrotestostérone dans le plasma, le testicule et l'ovaire chez le cobaye au cours de la vie faetale.