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- uses the body’s immune system, either directly or indirectly, to fight cancer or to lessen side effects that may be caused by some cancer treatments.
- treatment of allergy to substances such as pollens, house dust mites, fungi, and stinging insect venom by giving gradually increasing doses of the substance, or allergen, to which the person is allergic.
- treatment that uses the body’s natural defenses to fight disease.
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Medical Dictionary