title: Secretion of LH in rams exposed to two different photoperiods.
mesh_terms: D000818:Animals; D007031:Hypothalamus / Q000502:physiology; D008027:Light; D007986:Luteinizing Hormone / Q000378:metabolism*; D008297:Male; D010507:Periodicity; D012756:Sheep / Q000502:physiology*; D013737:Testis / Q000254:growth & development
chemical_list: D007986:Luteinizing Hormone