title: Prolactin in the cat: II. Diurnal patterns and photoperiod effects.
mesh_terms: D000818:Animals; D002415:Cats / Q000502:physiology*; D002940:Circadian Rhythm; D004971:Estrus; D005260:Female; D006041:Goats / Q000502:physiology; D010507:Periodicity; D010775:Photic Stimulation; D011247:Pregnancy; D011388:Prolactin / Q000378:metabolism*; D012756:Sheep / Q000502:physiology
chemical_list: D011388:Prolactin