...  by Kevin7: What is the research be done on viruses being used to treat liver cancer and other forms of cancer? Best answer: Answer by Ted HSmallpox vaccine kills liver cancer Erin Allday Updated 11:01 pm, Friday, November 23, 2012 A global team of scientists led by Bay Area doctors is studying an unusual new technique – involving, in part, injecting a genetically engineered smallpox vaccine directly into tumors – that they hope will prolong the lives of patients with untreatable liver cancer. Read ...