title: period and timeless tango: a dance of two clock genes.
authors.affiliation: Laboratory of Developmental Chronobiology, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA.
authors.forename: S M
authors.initials: SM
authors.lastname: Reppert
authors.forename: I
authors.initials: I
authors.lastname: Sauman
mesh_terms: D000818:Animals; D002940:Circadian Rhythm / Q000235:genetics*; D029721:Drosophila Proteins; D004331:Drosophila melanogaster / Q000235:genetics*; D005246:Feedback; D009687:Nuclear Proteins / Q000235:genetics* / Q000502:physiology; D056950:Period Circadian Proteins; D011506:Proteins / Q000235:genetics* / Q000502:physiology
chemical_list: D029721:Drosophila Proteins; D009687:Nuclear Proteins; C539040:PER protein, Drosophila; D056950:Period Circadian Proteins; D011506:Proteins; C096445:tim protein, Drosophila