Carlos Bustamante and group (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption (From left) Craig Hetherington, Carlos Bustamante and Shixin Liu have shed new light on a type of molecular motor used to package the DNA of a number of viruses, including herpes and the adenoviruses. Credit Photo by Roy Kaltschmidt, Berkeley Lab 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.