Tumors (IMAGE) Johns Hopkins Medicine Caption Representative confocal fluorescence microscopy image of a primary tumor (red) and associated tumor vasculature (green). Credit Vanesa Silvestri, Ph.D./Johns Hopkins Medicine 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.