[Clock genes and clock-controlled genes in mammals].

Hundreds of tissue-specific circadian genes have been identified that regulate various biological processes.

• The suprachiasmatic nucleus (SCN) serves as the primary circadian pacemaker in mammals.
• Oscillatory mechanisms associated with clock genes function in both peripheral organs and isolated cells.
• Circadian clocks operate through a transcriptional-translational mechanism present in the SCN and peripheral cells.
• Recent research highlights the complexity and diversity of biological processes influenced by circadian genes.

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