City of Hope Has Developed a Cancer-killing Virus That Activates Immune System, Helps Eliminate Colon Cancer December 1, 2020 Los Angeles Biotechnology Network News News Comments Off on City of Hope Has Developed a Cancer-killing Virus That Activates Immune System, Helps Eliminate Colon Cancer DUARTE, Calif.--(BUSINESS WIRE)--A cancer-killing virus that City of Hope scientists developed helps eliminate colon cancer. Click to view original post