title: The effect of adrenocorticotropic hormone (ACTH) on embryonic chicken gonads.
abstract: Chicken embryos were exposed to a single dose of adrenocorticotropic hormone (ACTH) on the 15th day of the incubation period. Five days later, the female embryos showed a significant increase in ovarian weight, ovarian thickness and oocyte count. In contrast, the male embryos showed a significant decreased in testicle weight, seminiferous cord diameter and gonocyte number. The opposite response of testes and ovaries is discussed.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000494:pharmacology*; D000818:Animals; D002452:Cell Count; D002642:Chick Embryo; D005260:Female; D008297:Male; D009865:Oocytes / Q000166:cytology; D009929:Organ Size / Q000187:drug effects; D010053:Ovary / Q000187:drug effects / Q000196:embryology*; D012737:Sex Factors; D013737:Testis / Q000166:cytology / Q000187:drug effects / Q000196:embryology*
chemical_list: D000324:Adrenocorticotropic Hormone