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  2. Antibody - Wikipedia

    en.wikipedia.org/wiki/Antibody

    Each antibody binds to a specific antigen in a highly specific interaction analogous to a lock and key.. An antibody (Ab) or immunoglobulin (Ig) is a large, Y-shaped protein belonging to the immunoglobulin superfamily which is used by the immune system to identify and neutralize antigens such as bacteria and viruses, including those that cause disease.

  3. Fragment antigen-binding region - Wikipedia

    en.wikipedia.org/wiki/Fragment_antigen-binding...

    The fragment antigen-binding region (Fab region) is a region on an antibody that binds to antigens. It is composed of one constant and one variable domain of each of the heavy and the light chain . The variable domain contains the paratope (the antigen-binding site), comprising a set of complementarity-determining regions , at the amino ...

  4. Framework region - Wikipedia

    en.wikipedia.org/wiki/Framework_region

    The framework regions are highly conserved regions of the variable portion of the antibody. The evolutionary reason for the conservation of these regions is to support proper folding of the antibody allowing the CDR regions to be stabilized. Folding in FR leads to antibody structure flexibility or rigidity of the binding region of the antibody ...

  5. Paratope - Wikipedia

    en.wikipedia.org/wiki/Paratope

    Antibody crystallizable region (Fc) 3. Heavy chains 4. Light chains 5. Variable region of the antibody. The paratope is the key-shaped section that makes direct contact with the antigen. [1] 6. Hinge regions . In immunology, a paratope, also known as an antigen-binding site, is the part of an antibody which recognizes and binds to an antigen.

  6. Immunoglobulin M - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_M

    Immunoglobulin M (IgM) is the largest of several isotypes of antibodies (also known as immunoglobulin) that are produced by vertebrates.IgM is the first antibody to appear in the response to initial exposure to an antigen; [1] [2] causing it to also be called an acute phase antibody.

  7. Immunolabeling - Wikipedia

    en.wikipedia.org/wiki/Immunolabeling

    Immunolabeling - Antigen Detection of Tissue via Tagged Antigen-specific Antibody. Immunolabeling is a biochemical process that enables the detection and localization of an antigen to a particular site within a cell, tissue, or organ.

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