title: Cellular clocks and oscillators.
mesh_terms: D000818:Animals; D001683:Biological Clocks; D002453:Cell Cycle; D002875:Chromosomes / Q000502:physiology; D002940:Circadian Rhythm; D004261:DNA Replication; D005786:Gene Expression Regulation; D006358:Hot Temperature; D006801:Humans; D010507:Periodicity