Tetrahedron DNA-Scaffolded Nicotine Vaccine (IMAGE) Arizona State University Caption A tetrahedral DNA structure is seen in green, with attached vaccine components including nicotine haptens, adjuvants and T-helper epitopes. Credit The Biodesign Institute at Arizona State University 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.