Tumor Blood Supply (IMAGE) Washington University School of Medicine Caption A tumor treated with fumagillin nanoparticles (left) is smaller than an untreated tumor. Nanoparticles containing an image-enhancing metal (yellow) show that the treated tumor has much less blood vessel growth than the untreated tumor. Credit Washington University School of Medicine Usage Restrictions Washington University in St. Louis provides this image for free use by media for purposes of news coverage; all other uses are prohibited. 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.