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Hypersensitivity
Inflammatory response to an exogenous environmental antigen or an endogenous antigen initiated by the adaptive immune system
Hypersensitivity is an abnormal physiological condition in which there is an undesirable and adverse immune response to an antigen. It is an abnormality in the immune system that causes immune diseases including allergies and autoimmunity. It is caused by many types of particles and substances from the external environment or from within the body that are recognized by the immune cells as antigens... Wikipedia
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