Faster Testing of New Pharmaceuticals (IMAGE) Fraunhofer-Gesellschaft Caption This system enables researchers to study cell interactions. The prototype consists of two integrated modules: the optical tweezers and the digital holographic microscope. Credit © Fraunhofer IPT Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. 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.