Animals Article Circadian Clocks Circadian Rhythm Signaling Peptides and Proteins Cry1 gene Cry1 protein, mouse Cryptochromes Gene Expression Regulation Markov chain Markov random field Mice Models, Biological Phenotype RNA translation Single-Cell Analysis Stochastic Processes Suprachiasmatic Nucleus Transcription, Genetic animal animal cell animal tissue biological model bioluminescence cell heterogeneity circadian rhythm circadian rhythm signaling protein computer model cryptochrome cryptochrome 1 cytology