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  2. Lymphocyte - Wikipedia

    en.wikipedia.org/wiki/Lymphocyte

    A lymphocyte is a type of white blood cell (leukocyte) in the immune system of most vertebrates. [1] Lymphocytes include T cells (for cell-mediated and cytotoxic adaptive immunity), B cells (for humoral, antibody-driven adaptive immunity), [2] [3] and innate lymphoid cells (ILCs; "innate T cell-like" cells involved in mucosal immunity and homeostasis), of which natural killer cells are an ...

  3. Type 3 innate lymphoid cells - Wikipedia

    en.wikipedia.org/wiki/Type_3_innate_lymphoid_cells

    ILC3 cells produce cytokines typical for the population of Th17 helper lymphocytes. The characteristic feature of ILC3 is the expression of the RORγt transcription factor, which is needed for its development and expression of the chemokine receptor CCR6. [2] This group of ILC produces IL-17 (especially IL-17A) [4] and IL-22. [5]

  4. Lymphokine - Wikipedia

    en.wikipedia.org/wiki/Lymphokine

    Circulating lymphocytes can detect a very small concentration of lymphokine and then move up the concentration gradient towards where the immune response is required. Lymphokines aid B cells to produce antibodies. Important lymphokines secreted by the T helper cell include: [2] Interleukin 2; Interleukin 3; Interleukin 4; Interleukin 5 ...

  5. Innate lymphoid cell - Wikipedia

    en.wikipedia.org/wiki/Innate_lymphoid_cell

    The coordinated expression of these specific transcription factors activate or repress target genes critical in the differentiation of the lymphocyte subsets. [27] In particular, Nfil3, whose expression is regulated by cytokines, controls the differentiation of ILCs via the transcription factors Id2, RORγt, Eomes, and Tox . [ 29 ]

  6. Immune system - Wikipedia

    en.wikipedia.org/wiki/Immune_system

    The cells of the adaptive immune system are special types of leukocytes, called lymphocytes. B cells and T cells are the major types of lymphocytes and are derived from hematopoietic stem cells in the bone marrow. [57] B cells are involved in the humoral immune response, whereas T cells are involved in cell-mediated immune response.

  7. CD4+/CD8+ ratio - Wikipedia

    en.wikipedia.org/wiki/CD4+/CD8+_ratio

    In COVID-19 B cell, natural killer cell, and total lymphocyte counts decline, but both CD4 + and CD8 + cells decline to a far greater extent. [12] Low CD4 + predicted greater likelihood of intensive care unit admission, and CD4 + cell count was the only parameter that predicted length of time for viral RNA clearance.

  8. Today's Wordle Hint, Answer for #1256 on Tuesday ... - AOL

    www.aol.com/lifestyle/todays-wordle-hint-answer...

    SPOILERS BELOW—do not scroll any further if you don't want the answer revealed. The New York Times. Today's Wordle Answer for #1256 on Tuesday, November 26, 2024.

  9. B1 cell - Wikipedia

    en.wikipedia.org/wiki/B1_cell

    B1 cells are a sub-class of B cell lymphocytes that are involved in the humoral immune response.They are not part of the adaptive immune system, as they have no memory, but otherwise, B1 cells perform many of the same roles as other B cells: making antibodies against antigens and acting as antigen-presenting cells.