FuOXP-siRNA nanoparticles (IMAGE) University of Pittsburgh Caption Electron microscopy image of nanoparticles containing the chemotherapy drug FuOXP and novel immunotherapy of siRNA that blocks expression of Xkr8. Credit Chen et al., 2022, Nature Nanotechnology, 10.1038/s41565-022-01266-2 Usage Restrictions For use with embargoed release License Original 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.