Laser Light Blocks Cancer Highway (3 of 3) (image) American Association for the Advancement of Science Share Print E-Mail Caption This image shows an inflated lymphatic vessel (purple) filled by human cancer cells (green) that have escaped the primary tumor, implanted in the mouse ear, along the lymphatic vessels. The cancer cells lodged inside the lymphatic vessel have begun stimulating the growth of surrounding blood vessels (red), indicating that the microscopic tumor nodule is rapidly growing into a visible tumor. This image relates to an article that appeared in the Feb. 9, 2011, issue of Science Translational Medicine, published by AAAS. The study, by Dr. Tuomas Tammela at Institute for Molecular Medicine Finland, in Helsinki, Finland and colleagues, was titled, "Photodynamic Ablation of Lymphatic Vessels and Intralymphatic Cancer Cells Prevents Metastasis." Credit Image courtesy of Helena Schmidt and Toumas Tammela Usage Restrictions Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. Share Print E-Mail 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.