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  2. Regular and irregular antibodies - Wikipedia

    en.wikipedia.org/wiki/Regular_and_irregular...

    They appear in the first years of life. They are of the IgM type. [1] It is not certain whether they are natural antibodies (being produced without any previous infection, vaccination, other foreign antigen exposure or passive immunization) or are caused by infection in early life.

  3. Coombs test - Wikipedia

    en.wikipedia.org/wiki/Coombs_test

    IgG antibodies are most reactive at 37°C. IgM antibodies are easily detected in saline at room temperature as IgM antibodies are able to bridge between RBC's owing to their large size, efficiently creating what is seen as agglutination. IgG antibodies are smaller and require assistance to bridge well enough to form a visual agglutination ...

  4. 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]

  5. Immunoglobulin G - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_G

    The water-accessible surface area of an IgG antibody. Immunoglobulin G (IgG) is a type of antibody. Representing approximately 75% of serum antibodies in humans, IgG is the most common type of antibody found in blood circulation. [1] IgG molecules are created and released by plasma B cells. Each IgG antibody has two paratopes.

  6. Dysgammaglobulinemia - Wikipedia

    en.wikipedia.org/wiki/Dysgammaglobulinemia

    IgG deficiency - IgG deficiency is a lack of IgG in the absence of other immunoglobulin deficiencies. IgG levels of 300–600 mg/dL show a mild to moderate reduction of IgG while levels below 200 mg/dl are classified as a severe deficiency. [6] Those with IgG deficiency often get chronic or reoccurring pyogenic respiratory tract infections. [7]

  7. Isotype (immunology) - Wikipedia

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

    μ – IgM; There are also two light chain isotypes κ and λ; however, there is no significant difference in function between the two. Thus an antibody isotype is determined by the constant regions of the heavy chains only. [1] IgM is first expressed as a monomer on the surface of immature B cells.

  8. IgG deficiency - Wikipedia

    en.wikipedia.org/wiki/IgG_deficiency

    IgG1 is present in the bloodstream at a percentage of about 60-70%, IgG2-20-30%, IgG3 about 5-8 %, and IgG4 1-3 %. IgG subclass deficiencies affect only IgG subclasses (usually IgG2 or IgG3), with normal total IgG and IgM immunoglobulins and other components of the immune system being at normal levels.

  9. Anti-immunoglobulin - Wikipedia

    en.wikipedia.org/wiki/Anti-immunoglobulin

    This is a recombinant monoclonal antibody to Pan-primate IgG. The antibody reacts to most primate IgG, including human IgG. The most important use of anti-Pan-primate is to quantify IgG in homogenates from macaque lungs and lymph nodes. [9] Anti-IgG [NH3/130.5.2] This is a recombinant monoclonal antibody to IgG.