MASTER CLOCK. “The circadian clock is a complex cellular mechanism that, through the control of diverse metabolic and gene expression pathways, governs a large array of cyclic physiological processes.”
https://www.nature.com/articles/s41591-018-0271-8?fbclid=IwAR01C2Z4J5lxVYDLhxIb9dPb3fhNSZSxwimZvhHaJ4n3-nVPpkt2PNqoukk