Atomic Clock (IMAGE) UT Southwestern Medical Center Caption This is an atomic-level image of the CLOCK:BMAL1 transcriptional activator complex. Credit Courtesy of Joseph Takahashi Usage Restrictions None 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.