title: Effect of progesterone on LH-releasing activity of the hypothalamus in non-laying hens primed with oestradiol.
abstract: LH-releasing activity of the hypothalamus in non-laying hens following the injection of progesterone was increased in hens that had been treated with oestradiol 4 h earlier. Short-term priming with oestradiol may be effective in increasing the responsiveness of the hen hypothalamus to progesterone.
mesh_terms: D000818:Animals; D002645:Chickens / Q000502:physiology*; D004958:Estradiol / Q000494:pharmacology*; D005260:Female; D007987:Gonadotropin-Releasing Hormone / Q000378:metabolism*; D007031:Hypothalamus / Q000187:drug effects* / Q000378:metabolism; D011374:Progesterone / Q000494:pharmacology*
chemical_list: D007987:Gonadotropin-Releasing Hormone; D011374:Progesterone; D004958:Estradiol