Fresszellen des Immunsystems (IMAGE) University of Bonn Caption – die Makrophagen (braun) – wandern bei der Tumorentwicklung in das kranke Gewebe (Krebszellen: blau) ein, ohne es zu zerstören. Credit © Karin E. de Visser/the Netherlands Cancer Institute Usage Restrictions This image may be used together with the press 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.