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  2. Lymphocytopenia - Wikipedia

    en.wikipedia.org/wiki/Lymphocytopenia

    Lymphocytopenia is commonly caused by a recent infection, such as the common cold or COVID-19. [3]Lymphocytopenia, but not idiopathic CD4+ lymphocytopenia, is associated with corticosteroid use, infections with HIV and other viral, bacterial, and fungal agents, malnutrition, systemic lupus erythematosus, [4] severe stress, [5] intense or prolonged physical exercise (due to cortisol release ...

  3. Idiopathic CD4+ lymphocytopenia - Wikipedia

    en.wikipedia.org/wiki/Idiopathic_CD4...

    Idiopathic CD4+ lymphocytopenia (ICL) is a rare medical syndrome in which the body has too few CD4 + T lymphocytes, which are a kind of white blood cell. [2] ICL is sometimes characterized as "HIV-negative AIDS", though, in fact, its clinical presentation differs somewhat from that seen with HIV/AIDS. [ 3 ]

  4. Cytopenia - Wikipedia

    en.wikipedia.org/wiki/Cytopenia

    Anemia – a reduction of the red blood cells in the body.; Leukopenia – a deficiency of white blood cells, or leukocytes [1]; Neutropenia – a type of leukopenia, with a specific deficiency in neutrophils [2]

  5. T cell deficiency - Wikipedia

    en.wikipedia.org/wiki/T_cell_deficiency

    T cell deficiency is a deficiency of T cells, caused by decreased function of individual T cells, it causes an immunodeficiency of cell-mediated immunity. [1] T cells normal function is to help with the human body's immunity, they are one of the two primary types of lymphocytes (the other being B cells).

  6. Leukopenia - Wikipedia

    en.wikipedia.org/wiki/Leukopenia

    Leukopenia (from Greek λευκός (leukos) 'white' and πενία (penia) 'deficiency') is a decrease in the number of leukocytes (WBC).Found in the blood, they are the white blood cells, and are the body's primary defense against an infection.

  7. T helper cell - Wikipedia

    en.wikipedia.org/wiki/T_helper_cell

    Activation of macrophage or B cell by T helper cell. The T helper cells (T h cells), also known as CD4 + cells or CD4-positive cells, are a type of T cell that play an important role in the adaptive immune system.

  8. Category:Lymphocytic disorders - Wikipedia

    en.wikipedia.org/wiki/Category:Lymphocytic_disorders

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  9. Bare lymphocyte syndrome - Wikipedia

    en.wikipedia.org/wiki/Bare_lymphocyte_syndrome

    Bare lymphocyte syndrome, type II (BLS II) is a rare recessive genetic condition in which a group of genes called the major histocompatibility complex class II (MHC class II) are not expressed.