V-TiO2 Nanospindles (IMAGE) American Institute of Physics Caption Vanadium-doped titanium dioxide nanospindles encased in polyethylene glycol (PEG) and used in combination with ultrasound waves can kill cancer cells. Credit Liang Cheng Usage Restrictions Journalists may use this image only with appropriate credit. 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.