Machines (3 of 3) (IMAGE) Rice University Caption Motorized molecules that target diseased cells may deliver drugs to or kill the cells by drilling into the cell membranes. Scientists at Rice, Durham (U.K.) and North Carolina State universities have demonstrated them on cancer and other cells. Credit Loïc Samuel/Rice 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.