A two-shot cancer "vaccine" has, according to new research, been wildly successful at attacking tumors in mice. A clinical trial using the treatment on human patients is now getting underway. The method works by using two agents to reinvigorate cancer-fighting T cells directly in the tumor. One of the agents amplifies the activation of the T cells, while the other stimulates the cells into attacking the cancer. Some of the T cells even leave the tumor to find and destroy similar growths in the body. The method has worked remarkably well in the lab with both targeted and untargeted tumors shrinking or disappearing after treatment. In this way a staggering 87 of 90 mice studied were cured of the cancer. The researchers saw similar results in mice with breast, colon and melanoma tumors. The study by Stanford researchers is published in the journal Science Translational Medicine. "When we use these two agents together, we see the elimination of tumors all over the body," one of