Nanobonding (image) Brown University Caption The illustration (top) shows how a RGD peptide-coated iron oxide nanoparticle binds with an integrin-rich tumor cell. At bottom left is a MRI of a mouse with the implanted U87MG tumor (red circle). At bottom right is an optical image that reveals iron oxide nanoparticles (blue) amassed in the tumor area (pink). Credit Jin Xie, Brown University Usage Restrictions None 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.