Health / Medical Topics

    Severe Combined Immunodeficiency

    Definition 1

    X-linked or autosomal recessive disorder characterized by defects of both humoral and cell mediated immunity, resulting in low or absent antibody levels, leukopenia, marked susceptibility to infections, and early death.--2004 (NCI Thesaurus)

    Definition 2

    A rare, inherited disease that is marked by a lack of B lymphocytes (white blood cells that make antibodies and help fight infections) and a lack of T lymphocytes (white blood cells that attack virus-infected cells, foreign cells, and cancer cells). Patients with this disease have a high risk of developing viral, bacterial, and fungal infections. (NCI Dictionary)

    Definition 3

    Group of rare congenital disorders characterized by impairment of both humoral and cell-mediated immunity, leukopenia, and low or absent antibody levels. It is inherited as an X-linked or autosomal recessive defect. About half of the patients with autosomal recessive SCID are deficient in the enzyme adenosine deaminase. (NLM, Medical Subject Headings)




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