From EurekAlert!, a long overview of recent advances towards cancer vaccines: "for the first time, the prospect of eradicating a specific cancer through vaccination is possible. ... researchers are working on the next era of vaccines designed to treat cancer that has already developed. These vaccines don't rev up the human immune system to attack an invading microbe, but prime the system to go after a unique biological tag found only on tumor cells. ... Hypothetically, once the immune system has been sufficiently stimulated, it would be able to find and destroy every single tumor cell throughout the body ... It could do this without destroying healthy tissue. That's the goal we strive every day for. ... This is an exciting time in cancer research, given our increased understanding of the molecular nature of cancer and the immune response." The defeat of cancer is a very necessary step on the road to radical life extension.