enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. T cell - Wikipedia

    en.wikipedia.org/wiki/T_cell

    The majority of T cells express αβ TCR chains. This group of T cells is much less common in humans and mice (about 2% of total T cells) and are found mostly in the gut mucosa, within a population of intraepithelial lymphocytes. In rabbits, sheep, and chickens, the number of γδ T cells can be as high as 60% of total T cells.

  3. Thymus - Wikipedia

    en.wikipedia.org/wiki/Thymus

    Once mature, T cells emigrate from the thymus to provide vital functions in the immune system. [11] [12] Each T cell has a distinct T cell receptor, suited to a specific substance, called an antigen. [12] Most T cell receptors bind to the major histocompatibility complex on cells of the body.

  4. Lymph node - Wikipedia

    en.wikipedia.org/wiki/Lymph_node

    Lymph nodes contain lymphocytes, a type of white blood cell, and are primarily made up of B cells and T cells. [5] B cells are mainly found in the outer cortex where they are clustered together as follicular B cells in lymphoid follicles, and T cells and dendritic cells are mainly found in the paracortex. [19]

  5. Thymic epithelial cell - Wikipedia

    en.wikipedia.org/wiki/Thymic_epithelial_cell

    Thymic epithelial cells (TECs) are specialized cells with high degree of anatomic, phenotypic and functional heterogeneity that are located in the outer layer (epithelium) of the thymic stroma. The thymus , as a primary lymphoid organ , mediates T cell development and maturation.

  6. Regulatory T cell - Wikipedia

    en.wikipedia.org/wiki/Regulatory_T_cell

    All T cells derive from progenitor cells in the bone marrow, which become committed to their lineage in the thymus.All T cells begin as CD4-CD8-TCR- cells at the DN (double-negative) stage, where an individual cell will rearrange its T cell receptor genes to form a unique, functional molecule, which they, in turn, test against cells in the thymic cortex for a minimal level of interaction with ...

  7. 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 ...

  8. T helper cell - Wikipedia

    en.wikipedia.org/wiki/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. They aid the activity of other immune cells by releasing cytokines .

  9. Naive T cell - Wikipedia

    en.wikipedia.org/wiki/Naive_T_cell

    In immunology, a naive T cell (T h 0 cell) is a T cell that has differentiated in the thymus, ... (TCR) located in the cell membrane of Th0 cells, ...