Photoperiodicity in mammals.
D000818:Animals; D001522:Behavior, Animal; D004971:Estrus; D005246:Feedback; D005260:Female; D006128:Growth; D008027:Light; D007986:Luteinizing Hormone / Q000378:metabolism; D008297:Male; D008322:Mammals / Q000502:physiology*; D010507:Periodicity; D011247:Pregnancy; D012098:Reproduction; D012756:Sheep; D013997:Time Factors
D007986:Luteinizing Hormone