Shedding Light on the Day-Night Cycle (IMAGE) Washington University School of Medicine Caption Living fruit flies' brains were scanned every 10 minutes for 24 hours to help understand the master circadian clock in the brain and how it helps coordinate body rhythms. Credit Taghert lab/Washington University Usage Restrictions Credit to Taghert lab/Washington University License Licensed content 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.