David Nolte and Kwan Jeong (IMAGE) Purdue University Caption Purdue physics professor David Nolte, at right, works with graduate assistant Kwan Jeong on their digital holographic imaging system. Nolte's team used the device to observe the response of tumors to anticancer drugs in real-time, 3-D images. Credit Purdue News Service photo/David Umberger 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.