title: The photoneuroendocrine control of seasonal breeding in the ewe.
mesh_terms: D000818:Animals; D001947:Breeding; D004958:Estradiol / Q000378:metabolism; D004971:Estrus; D005246:Feedback; D005260:Female; D006728:Hormones / Q000502:physiology; D007030:Hypothalamo-Hypophyseal System / Q000502:physiology*; D008027:Light; D007986:Luteinizing Hormone / Q000378:metabolism; D010786:Photoreceptor Cells / Q000502:physiology; D011247:Pregnancy; D012160:Retina / Q000502:physiology; D012621:Seasons; D012756:Sheep / Q000502:physiology*
chemical_list: D006728:Hormones; D004958:Estradiol; D007986:Luteinizing Hormone