Research Group (image) University of Illinois at Urbana-Champaign Caption Illinois researchers developed spiral polypeptides that can deliver DNA segments to cells with high efficiency and relatively low toxicity, a step toward clinical gene therapy. The team, from left, postdoctoral researchers Lichen Yin and Dong Li; Fei Wang, a professor of cell and developmental biology; Jianjun Cheng, a professor of materials science and engineering; and Nathan Gabrielson, a postdoctoral researcher. Credit L. Brian Stauffer 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.