Hyyppä, M T Failure of sex steroid hormones to affect brain serotonin synthesis in rats. [electronic resource] - Steroids and lipids research 1973 - 295-301 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0300-0621 Subjects--Topical Terms: AnimalsAnimals, NewbornBrain--drug effectsCastrationEstradiol--pharmacologyFemaleMaleOvary--physiologyProgesterone--pharmacologyRatsSerotonin--biosynthesisTestis--physiologyTestosterone--pharmacologyTritiumTryptophan--metabolism