Glowing Tumos (image) Johns Hopkins Medicine Share Print E-Mail Caption Radiolabeled protein lights up tumor implanted in the arm of a mouse under a PET scan. The researchers hope to use scans like this one to to calculate in real time how much of an immunotherapy drug reaches a tumor and what parts of a cancer remain unaffected. Credit Sridhar Nimmagadda Usage Restrictions None Share Print E-Mail 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.