Detection of nanoparticle contrast agents (IMAGE) KTH, Royal Institute of Technology Caption Detection of the newly-developed nanoparticle contrast agents inside a mouse cell with optical fluorescence (in red). The cell nucleus and plasma membrane are depicted in blue and green, respectively. Credit Giovanni Marco Saladino 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.