Time of day versus internal circadian timing references.
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Department of Laboratory Medicine, University of Minnesota, Minneapolis 55455, USA.
D000818:Animals; D002940:Circadian Rhythm; D004334:Drug Administration Schedule; D006801:Humans; D051379:Mice; D051381:Rats; D012890:Sleep / Q000502:physiology; D013997:Time Factors; D014851:Wakefulness / Q000502:physiology