Golden 3-D DNA Nanotubes (video) Arizona State University Loading video... Caption 5-nm size gold nanoparticles wrap around the perimeter of a DNA nanotube in a spiral pattern. The 3-D structures have been recreated from cryoelectron tomographic imaging. Credit The Biodesign Institute at Arizona State University Usage Restrictions None 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.