Silica Nanoparticles (IMAGE) Johannes Gutenberg Universitaet Mainz Caption Silica nanoparticles adhering to an intestinal bacterium visualized by atomic force microscopy. Credit source: Stauber Group, Mainz University Medical Center Usage Restrictions This image may only be used in connection with the press release "'Small meets smaller': Dietary nanoparticulates impact gut microbiome", issued by Johannes Gutenberg University Mainz on January 29, 2019. 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.