Casein Kinase 1 Delta (CK1δ) Regulates Period Length of the Mouse Suprachiasmatic Circadian Clock In Vitro Etchegaray, Jean-Pierre ; Yu, Elizabeth A. ; Indic, Premananda ; Dallmann, Robert ; Weaver, David R. Abstract Publication: PLoS ONE Pub Date: April 2010 DOI: 10.1371/journal.pone.0010303 Bibcode: 2010PLoSO...510303E