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immunodeficiency |
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immunodeficiencyDefect in immunity that impairs the body's ability to resist infection. The immune system may fail to function for many reasons. Immune disorders caused by a genetic defect are usually evident early in life. Others can be acquired at any age through infections (e.g., AIDS) or immunosuppression. Aspects of the immune response that may be affected include lymphocytes, other leukocytes, antibodies, and complement. Severe combined immunodeficiency (SCID), which arises from several different genetic defects, disrupts all of these. Depending on the cause, treatment for immunodeficiency may be administration of immunoglobulins, bone-marrow transplant, or therapy for the underlying disease. immunodeficiency a deficiency in or breakdown of a person's immune system immunodeficiency [¦im·yə‚nō·də′fish·ən·sē] (immunology) Any defect of antibody function or cell-mediated immunity. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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All three patients who developed PML were taking natalizumab with other drugs and might have had overly suppressed immune systems, says Allan H. Traditional drinking water disinfectants such as chlorine are ineffective against the organism, which can cause flu-like symptoms in healthy people but prove fatal to people with suppressed immune systems. Such bacteria thrive in patients with suppressed immune systems, such as those undergoing chemotherapy. |
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