Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.
In many animals, circadian oscillators in the brain and periphery synchronize gene expression and behavior with the 24-hour day:night cycle. In their Perspective, Green and Menaker discuss new work (Dudley et al.), which shows that the master oscillator in the hypothalamus, the suprachiasmatic nucleus, cooperates with an oscillator in the forebrain to synchronize circadian behavior in mice.
The authors are in the Department of Biology and Center for Biological Timing, University of Virginia, Charlottesville, VA 22904, USA.
The editors suggest the following Related Resources on Science sites: