Oxygen Map (IMAGE) Dartmouth Health Caption An oxygen map image recovered from a mouse undergoing radiation therapy. The luminescent oxygen probe PtG4 is injected during the week of radiation treatment and localizes between the cells of the tumor as illustrated by microscopy (red). Credit Brian Pogue, PhD Usage Restrictions With permission from Brian Pogue, PhD 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.