Johannes Karges (IMAGE) Ruhr-University Bochum Caption Together with an international team, Johannes Karges has developed an active substance that uses ultrasound to unfold its cell-damaging effect only where it is supposed to. Credit © RUB, Marquard Usage Restrictions The image may only be used in the context of the press release " Ultrasound activates anticancer agent” published by RUB on 5.4.2023. License Original 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.