Glossary Term:


cancer vaccine



a vaccine used to help the body fight cancer cells. So far, a vaccine has been approved to help treat cancer (not prevent it). It is made for each patient using pieces of their tumor and works by causing their immune system to recognize and attack the cancer cells. There are also researchers trying to develop vaccines to prevent certain types of cancer, although none have yet been approved for use. Another type of vaccine that is already in use reduces cancer risk indirectly, by helping the body fight cancer-causing viruses such as the human papilloma virus (HPV) and the hepatitis B virus. See also human papilloma virus.