NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,938 terms related to cancer and medicine.

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viral vector
(VY-rul VEK-ter)
A type of virus used in cancer therapy. The virus is changed in the laboratory and cannot cause disease. Viral vectors may produce tumor antigens (proteins found on a tumor cell) to stimulate an antitumor immune response in the body. Viral vectors may also be used to carry genes that can change cancer cells back to normal cells.