Targeted Nanoparticle (IMAGE) California Institute of Technology Caption This targeted nanoparticle used in the study and shown in this schematic is made of a unique polymer and can make its way to human tumor cells in a dose-dependent fashion. Credit Caltech/Derek Bartlett Usage Restrictions With credit as given. 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.