Graphical abstract (IMAGE) Stanford University School of Engineering Caption Understanding what turns regeneration on and off could lead to advances in medical treatments and interventions, including implications related to cancer. Credit The Wang Lab / Stanford Engineering Usage Restrictions Use photo credit License Original 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.