On the Way Out (IMAGE) Rockefeller University Caption The anatomy of the pump's pocket for carrying cargo (highlighted in blue) explains how this molecular machine is able to grab and eject a wide range of substances, including cancer drugs. Credit Ella Maru Studio Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. 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.