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  2. Antigen processing - Wikipedia

    en.wikipedia.org/wiki/Antigen_processing

    Antigen processing, or the cytosolic pathway, is an immunological process that prepares antigens for presentation to special cells of the immune system called T lymphocytes. It is considered to be a stage of antigen presentation pathways.

  3. Antigen presentation - Wikipedia

    en.wikipedia.org/wiki/Antigen_presentation

    Antigen presentation is a vital immune process that is essential for T cell immune response triggering. Because T cells recognize only fragmented antigens displayed on cell surfaces, antigen processing must occur before the antigen fragment can be recognized by a T-cell receptor.

  4. Cross-presentation - Wikipedia

    en.wikipedia.org/wiki/Cross-presentation

    The vacuolar pathway is initiated through the endocytosis of an extracellular antigen by a dendritic cell. [6] Endocytosis results in the formation of a phagocytic vesicle, where an increasingly acidic environment along with the activation of enzymes such as lysosomal proteases triggers the degradation of antigen into peptides.

  5. VCAM-1 - Wikipedia

    en.wikipedia.org/wiki/VCAM-1

    VCAM-1 is a member of the immunoglobulin superfamily, the superfamily of proteins including antibodies and T-cell receptors.The VCAM-1 gene contains six or seven immunoglobulin domains, and is expressed on both large and small blood vessels only after the endothelial cells are stimulated by cytokines.

  6. Antigen-presenting cell - Wikipedia

    en.wikipedia.org/wiki/Antigen-presenting_cell

    Antigen presentation stimulates immature T cells to become either mature "cytotoxic" CD8+ cells or mature "helper" CD4+ cells. An antigen-presenting cell (APC) or accessory cell is a cell that displays an antigen bound by major histocompatibility complex (MHC) proteins on its surface; this process is known as antigen presentation.

  7. Complement component 1q - Wikipedia

    en.wikipedia.org/wiki/Complement_component_1q

    The C1q domain is a conserved protein domain. C1q is a subunit of the C1 enzyme complex that activates the serum complement system.C1q comprises 6 A, 6 B and 6 C chains.These share the same topology, each possessing a small, globular N-terminal domain, a collagen-like Gly/Pro-rich central region, and a conserved C-terminal region, the C1q domain. [2]

  8. ERAP1 - Wikipedia

    en.wikipedia.org/wiki/ERAP1

    Efficient presentation of antigenic peptides by MHC class I molecules provides the key signal for adaptive immune responses by cytotoxic (CD8 +) T lymphocytes.In the "endogenous" antigen presentation pathway, proteins synthesized by cells undergo cytosolic degradation and some of their peptide fragments are transported to the ER, where suitable-length peptides are loaded onto MHC class I ...

  9. Antigen - Wikipedia

    en.wikipedia.org/wiki/Antigen

    An illustration that shows how antigens induce the immune system response by interacting with an antibody that matches the molecular structure of an antigen. In immunology, an antigen (Ag) is a molecule, moiety, foreign particulate matter, or an allergen, such as pollen, that can bind to a specific antibody or T-cell receptor. [1]