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NCI Dictionary of Cancer Terms


radioimmunotherapy  listen  (RAY-dee-oh-IH-myoo-noh-THAYR-uh-pee)

  A type of radiation therapy in which a radioactive substance is linked to a monoclonal antibody and injected into the body. The monoclonal antibody can bind to substances in the body, including cancer cells. The radioactive substance gives off radiation, which may help kill cancer cells. Radioimmunotherapy is being used to treat some types of cancer, such as lymphoma.