Immune complex
A cluster of interlocking antigens and antibodies forming a large network of molecules. Also called an antigen-antibody complex.
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- Immune response
Any reaction by the immune system. For example, poison ivy can cause an immune response in the skin characterized by inflammation with tiny blisters, and itching. Also, a flu shot is designed to produce an immune response by stimulating the production of antibodies against the flu virus.
- Immune system
A complex system that is responsible for distinguishing a person from everything foreign to him or her and for protecting his or her body against infections and foreign substances.
- Immune thrombocytopenic purpura
purplish areas in the skin and mucous membranes (such as the mouth lining) where bleeding has occurred as a result of decreased platelets. Immune thrombocytopenic purpura (ITP) can be triggered by drugs, or associated with infection, pregnancy, or immune disorders such as systemic lupus erythematosus. About half of all cases are classified as “idiopathic,” meaning […]
- Immune tolerance
Prior contact with the same antigen in fetal life or in the newborn period when the immune system is not yet mature; Prior contact with the antigen in extremely high or low doses; Exposure to radiation, chemotherapy drugs, or other agents that impair the immune system; Heritable diseases of the immune system; Acquired diseases of […]
- Immunity
The condition of being immune. Immunity can be innate’for example, humans are innately immune to canine distemper’or conferred by a previous infection or immunization.