title: Photoperiod and sexual maturation of the female lamb: early exposure to short days perturbs estradiol feedback inhibition of luteinizing hormone secretion and produces abnormal ovarian cycles.
mesh_terms: D000818:Animals; D002369:Castration; D004958:Estradiol; D004971:Estrus; D005260:Female; D007986:Luteinizing Hormone / Q000097:blood; D010053:Ovary / Q000502:physiology*; D010775:Photic Stimulation; D011247:Pregnancy; D011374:Progesterone / Q000097:blood; D012621:Seasons; D012741:Sexual Maturation; D012756:Sheep / Q000502:physiology*; D013997:Time Factors
chemical_list: D011374:Progesterone; D004958:Estradiol; D007986:Luteinizing Hormone