Illustration of gene network that controls circadian rhythms (image) American Institute of Physics Share Print E-Mail Caption This figure illustrates a gene network that controls circadian rhythms. Instead of there simply being one clock gene, a more complex network is involved. Credit Rongling Wu Usage Restrictions Journalists may use this image only with appropriate credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.