DARPins-HER2 (IMAGE) University of Zurich Caption The new active ingredient consists of DARPins (red and orange) bend the HER2 receptors (blue) so no more growth signal is transmitted into the cell interior (below the cell membrane in yellow). Credit © UZH 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.