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  2. Rheumatoid factor - Wikipedia

    en.wikipedia.org/wiki/Rheumatoid_factor

    Rheumatoid factor (RF) is the autoantibody that was first found in rheumatoid arthritis. It is defined as an antibody against the Fc portion of IgG and different RFs can recognize different parts of the IgG-Fc. [ 1 ]

  3. Isotype (immunology) - Wikipedia

    en.wikipedia.org/wiki/Isotype_(immunology)

    The IgG, IgE and IgA antibody isotypes are generated following class-switching during germinal centre reaction and provide different effector functions in response to specific antigens. IgG is the most abundant antibody class in the serum and it is divided into 4 subclasses based on differences in the structure of the constant region genes and ...

  4. Anti-cardiolipin antibodies - Wikipedia

    en.wikipedia.org/wiki/Anti-cardiolipin_antibodies

    This is in contrast to rheumatoid arthritis [6] with systemic sclerosis (scleroderma) [7] because anti-cardiolipin antibodies are present in both conditions, and therefore may tie the two conditions together. Anti-cardiolipin antibodies can be classified in two ways: As IgM, IgG or IgA; As β 2-glycoprotein dependent or independent

  5. Fragment crystallizable region - Wikipedia

    en.wikipedia.org/wiki/Fragment_crystallizable_region

    This region allows antibodies to activate the immune system, for example, through binding to Fc receptors. In IgG , IgA and IgD antibody isotypes , the Fc region is composed of two identical protein fragments, derived from the second and third constant domains of the antibody's two heavy chains ; IgM and IgE Fc regions contain three heavy chain ...

  6. Immunoglobulin class switching - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_class_switching

    Mechanism of class-switch recombination that allows isotype switching in activated B cells. Immunoglobulin class switching, also known as isotype switching, isotypic commutation or class-switch recombination (CSR), is a biological mechanism that changes a B cell's production of immunoglobulin from one type to another, such as from the isotype IgM to the isotype IgG. [1]

  7. Anti-immunoglobulin - Wikipedia

    en.wikipedia.org/wiki/Anti-immunoglobulin

    This is a recombinant monoclonal antibody to IgM. The anti-antibody functions in early detection of antigens in serum rather than interstitial fluids. [13] Anti-IgM [B481] This is a recombinant monoclonal antibody to IgM. It is recommended to use anti-IgM [B481] as a secondary antibody against IgM primary antibodies. [14]

  8. Immunoglobulin superfamily - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_superfamily

    Antibodies or immunoglobulins: IgA IgD IgE IgG IgM; T-cell receptor chains; Antigen receptors found on the surface of T and B lymphocytes in all jawed vertebrates belong to the IgSF. Immunoglobulin molecules (the antigen receptors of B cells) are the founding members of the IgSF.

  9. Organization and expression of immunoglobulin genes

    en.wikipedia.org/wiki/Organization_and...

    These switches occur at the level of rearrangements of the DNA because there is a looping event that chops off the constant regions for IgM and IgD and form the IgG mRNAs. Any continuous looping occurrence will produce IgE or IgA mRNAs. In addition, cytokines are factors that have great effects on class switching of different classes of ...

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