Laser Light Blocks Cancer Highway (1 of 3) (video) American Association for the Advancement of Science Share Print E-Mail Loading video... Caption Destruction of collecting lymphatic vessels with PDT in the pig. This video shows two large collecting lymphatic vessels that drain to lymph nodes in the pelvic region of a pig. The vessels and lymph nodes were visualized by injection of a contrast agent into the lymphatic vessels of both lower limbs. The vessel on the right underwent photodynamic therapy, which led to the destruction of the vessel, as identified by leakage of the contrast agent in the distal part of the lymphatic vessel. This video was narrated by Nadia Ramlagan of the Science Press Package team. This video 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 Video courtesy of Helena Schmidt and Tuomas Tammela Usage Restrictions Please cite the owner of the video when publishing. This video 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.