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Immunodeficiency in Biological Definition

Immune system

... immune response and those characterized by overzealous immune response. immunodeficiency is characterized by an attenuated response. There are congenital ... of the latter. Immunosuppressive medication intentionally induces an immunodeficiency in order to prevent rejection of transplanted organs . On the other ...

Immunology

... Many diseases caused by the immune system fall into two broad categories: immunodeficiency , in which parts of the immune system fail to provide an adequate response ... the immune system itself is AIDS , caused by the HIV virus . AIDS is an immunodeficiency characterized by the lack of CD4+ ("helper") T cells and macrophages , ...

Retrovirus

... dermal sarcoma virus Genus Lentivirus ; type species: Human immunodeficiency virus 1 ; others include Simian , Feline immunodeficiency viruses Genus Spumavirus ; type species: Chimpanzee foamy virus ...

Gene therapy

... happens to be one regulating cell division, uncontrolled cell division (i.e., cancer ) can occur. Gene therapy trials to treat severe combined immunodeficiency (SCID) were halted or restricted when leukemia was reported in several of the patients. Adenoviruses Adenoviruses are viruses that carry ...

Purine

... can further degrade uric acid. The deficiency of another enzyme, adenosine deaminase , needed to break down adenine, is a cause of severe combined immunodeficiency . Purines from turnover of nucleic acids (or from food) can also be salvaged and reused in new nucleotides. The enzyme adenine ...

RNA virus

... Hepatitis C&G Orthomyxoviridae : Influenza Paramyxoviridae : Mumps Picornaviridae : Polio Reoviridae Retroviridae : Human immunodeficiency Virus Rhabdoviridae : Rabies - Vesicular stomatitis virus Togaviridae Filoviridae : Ebola See also DNA virus Virus ...

X chromosome

... nonsyndromic deafness and X-linked nonsyndromic deafness Rett syndrome spinal and bulbar muscular atrophy X-linked severe combined immunodeficiency X-linked sideroblastic anemia References Earlier versions of this article contain material from the National Library of Medicine ...
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