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  2. File:CD4+ T cell subsets.pdf - Wikipedia

    en.wikipedia.org/wiki/File:CD4+_T_cell_subsets.pdf

    English: Depiction of the various key subsets of CD4-positive T cells with corresponding associated cytokines and transcription factors. Figure legend T cells leave the thymus in a naïve, antigen non-experiened state. After contact with antigen, T cells may take on one of numerous subsets.

  3. 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 .

  4. T cell - Wikipedia

    en.wikipedia.org/wiki/T_cell

    T cells are grouped into a series of subsets based on their function. CD4 and CD8 T cells are selected in the thymus, but undergo further differentiation in the periphery to specialized cells which have different functions. T cell subsets were initially defined by function, but also have associated gene or protein expression patterns.

  5. CD4 - Wikipedia

    en.wikipedia.org/wiki/CD4

    T-cells play a large part in autoinflammatory diseases. [25] When testing a drug's efficacy or studying diseases, it is helpful to quantify the amount of T-cells on fresh-frozen tissue with CD4+, CD8+, and CD3+ T-cell markers (which stain different markers on a T-cell – giving different results). [26]

  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. 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, and successfully undergone the positive and negative processes of central selection in the thymus. Among these are the naive forms of helper T cells ( CD4 + ) and cytotoxic T cells ( CD8 + ).

  8. Th22 cell - Wikipedia

    en.wikipedia.org/wiki/Th22_cell

    Th22 cells (T helper cells type 22) are subpopulation of CD4+ T cells that produce interleukin-22 . They play a role in the protective mechanisms against variety of bacterial pathogens, tissue repair and wound healing, and also in pathologic processes, including inflammations , autoimmunity , tumors, and digestive organs damages.

  9. Tyrosin-protein kinase Lck - Wikipedia

    en.wikipedia.org/wiki/Tyrosin-protein_kinase_Lck

    The threshold for positive and negative selection of developing T cells is regulated by the bound between the Lck and co-receptors. [10] There are two main pools of T cells which mediate adaptive immune responses: CD4+ T cells (or helper T cells), and CD8+ T-cells (or cytotoxic T cells) which are MHCII-and MHCI restricted respectively.

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