Photo of Researchers (IMAGE) Karolinska Institutet Caption From left: Giulia Grande and Debora Rizzuto, study authors and researchers at Karolinska Institutet. Credit Stefan Zimmerman. 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.