Biological ClocksCircadian RhythmCLOCK ProteinsCircadian ClocksSuprachiasmatic NucleusPeriod Circadian ProteinsARNTL Transcription FactorsCavesCryptochromesLightPhotoperiodFlavoproteinsCircadian Rhythm Signaling Peptides and ProteinsMelatoninDarknessModels, BiologicalPeriodicityNeurospora crassaNuclear ProteinsGene Expression RegulationCell Cycle ProteinsTranscription FactorsRNA, MessengerTime FactorsAgingNuclear Receptor Subfamily 1, Group D, Member 1Biological Products