Cancer Caught on Video 5. Attracting blood vessels previous | next As tumors grow larger, they begin to develop the need for angiogenesis and must attract new blood vessels if they are to keep growing. This small melanoma cancer is beginning to show signs of blood vessel activity inside it, and these might be 'angiogenic' new blood vessels. previous | next Watch the Program Here | Dr. Folkman Speaks | Cancer Caught on Video Designing Clinical Trials | Accidental Discoveries | How Cancer Grows Help/Resources | Transcript | Site Map | Cancer Warrior Home Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print PBS Online | NOVA Online | WGBH © | Updated February 2001