Keeping the Body Ticking (image) Duke-NUS Medical School Share Print E-Mail Caption A temperature-sensitive switch regulates the body's circadian clock. Credit Zhang Fuquan / Duke-NUS Usage Restrictions Please give credit if and when using the image. 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.