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by Dr. William D. Knopf
Biologic therapy is a treatment that uses the patient's immune system to fight cancer. Substances made by the body or made in a laboratory are used to boost, direct, or restore the body's natural defenses against cancer. This type of cancer treatment is also called biotherapy or immunotherapy.
This answer from the National Cancer Institute has been reviewed and/or edited by Dr. William D. Knopf....