Researchers (IMAGE) University of Wisconsin-Madison Caption Co-lead author Zafirah Zaidan and co-author Sunnie Grace McCalla work in the lab, which studies the molecular mechanisms of cell fate. Credit Kim Leadholm, Wisconsin Institute For Discovery 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.