Gold Nanotubes (IMAGE) University of Leeds Caption Pulsed near infrared light (shown in red) is shone onto a tumor (shown in white) that is encased in blood vessels. The tumor is imaged by multispectral optoacoustic tomography via the ultrasound emission (shown in blue) from the gold nanotubes. Credit Jing Claussen (Ithera Medical, Germany) Usage Restrictions Credit: Jing Claussen (Ithera Medical, Germany) 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.