"Time machine" experiment (IMAGE) Purdue University Caption Purdue researchers used this experimental setup to reprogram pancreatic cancer cells back into their normal state. Credit Purdue University photo/John Underwood Usage Restrictions No restrictions. License Public Domain 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.