. >> at the national cancer institute deputy director anna barker is accelerating cancer research. >> i see more promise to advance against this disease i've seen in the last 35 or so years. >> reporter: it suddenly becomes dangerous and you feel hopeless because i don't have confidence you can control it. >> as a scientist i think of cancer as insidious. >> tyler and phil are molecular biologists. >> our efforts over the last 30 years have been to define the nature of the differences between normal cells and cancer cells. whatare we are learning the process is ever changing and the cancer is evolving so it develops new capabilities and avoid our to control it. >> cells in our bodies grow, divide and die, an ongoing natural process. >> you replace your bones in seven years or something like that, all those cells are being produced. >> and then for one reason or another, some of those genes drives the development of cancer. >> one in every two to three americans now alive will develop an invasive cancer sometime during their life. about one in five of americans will die of cancer if we