title: The cellular circadian oscillator--a fundamental biological mechanism corresponding to a geophysical periodicity.
authors.forename: R
authors.initials: R
authors.lastname: Hardeland
authors.forename: I
authors.initials: I
authors.lastname: Balzer
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D008660:Metabolism; D008685:Meteorological Concepts; D008954:Models, Biological