Fluorescent-Tagged Nanoparticles (IMAGE) University of South Florida (USF Health) Caption Confocal microscopy image shows fluorescent-tagged nanoparticles (pink) carrying siRNA taken up by mouse colorectal cancer cells. Credit © Photo courtesy of University of Washington in St. Louis Usage Restrictions Please use with appropriate caption and credit. 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.