Metastasis Illustration (IMAGE) Johns Hopkins University Caption This is an illustration of the newly discovered mechanism by which cancer cells are able to spread disease throughout the body. Credit Martin Rietveld/JHU Usage Restrictions None 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.