title: Photoperiodic control of circadian activity rhythms in diurnal rodents.
mesh_terms: D000204:Activity Cycles; D000818:Animals; D002940:Circadian Rhythm; D005260:Female; D008027:Light; D008297:Male; D012377:Rodentia / Q000502:physiology*; D012589:Sciuridae / Q000502:physiology*