title: Changes in the plasma LH, progesterone, and estradiol during the ovulatory cycle of the duck (Anas platyrhynchos domestica) exposed to different photoperiods.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D004372:Ducks / Q000097:blood / Q000502:physiology*; D004958:Estradiol / Q000097:blood*; D005260:Female; D008027:Light; D007986:Luteinizing Hormone / Q000097:blood*; D010060:Ovulation; D011374:Progesterone / Q000097:blood*; D013997:Time Factors
chemical_list: D011374:Progesterone; D004958:Estradiol; D007986:Luteinizing Hormone