Immunity

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Immunity
TermImmunity
Short definitionimmunity (ih-MYOO-nih-tee) In medicine, the immune system's method of protecting the body from an infectious disease. The three types of immunity are innate, adaptive, and passive. 
TypeCancer terms
SpecialtyOncology
LanguageEnglish
SourceNCI
Comments


immunity - (pronounced) (ih-MYOO-nih-tee) In medicine, the immune system's method of protecting the body from an infectious disease. The three types of immunity are innate, adaptive, and passive. Innate immunity includes barriers such as skin and mucous membranes that prevent harmful substances from entering the body. It is the body's immune system's first reaction to a foreign substance. Adaptive immunity occurs in response to infection with or vaccination against a microorganism. The body makes an immune response that can prevent future infection with the microorganism. Adaptive immunity can last a lifetime. Passive immunity occurs when a person receives antibodies to a disease instead of producing them through their own immune system. Passive immunity provides immediate protection but only lasts a few weeks or months

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