NEWS-CANCER - UV light aids cancer cells that creep along the outside of blood vessels

A new study by UCLA scientists and colleagues adds further proof to earlier findings by Dr. Claire Lugassy and Dr. Raymond Barnhill of UCLA's Jonsson Comprehensive Cancer Center that deadly melanoma cells can spread through the body by creeping like tiny spiders along the outside of blood vessels without ever entering the bloodstream ...

http://medicalxpress.com/news/2014-03-uv-aids-cancer-cells-blood.htm