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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. Fragment crystallizable region - Wikipedia

    en.wikipedia.org/wiki/Fragment_crystallizable_region

    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 constant domains (C H domains 2–4) in each polypeptide chain.

  4. Organization and expression of immunoglobulin genes

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

    The class switching involves switch regions that made up of multiple copies of short repeats (GAGCT and TGGGG). 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.

  5. 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.

  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. Type III hypersensitivity - Wikipedia

    en.wikipedia.org/wiki/Type_III_hypersensitivity

    Rheumatoid Arthritis: Antibody complexes: specifically IgM to IgG Arthritis; IgA nephropathy [2] IgA antibodies with O-glycans deficient in galactose [2] Nephritis [2] Post-streptococcal glomerulonephritis: Streptococcal cell wall antigens Nephritis; Polyarteritis nodosa: Hepatitis B virus surface antigen: Systemic vasculitis; Reactive arthritis

  8. Immunoglobulin heavy chain - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_heavy_chain

    Each heavy chain has two regions: a constant region (which is the same for all immunoglobulins of the same class but differs between classes).. Heavy chains γ, α and δ have a constant region composed of three tandem (in a line next to each other) immunoglobulin domains but also have a hinge region for added flexibility.

  9. Anti-immunoglobulin - Wikipedia

    en.wikipedia.org/wiki/Anti-immunoglobulin

    Anti-IgM [M15/8] 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]

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