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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. In humans and other mammals that have been ...
Hapag and NDL continued to compete until they established a joint-venture container line. The "Hapag-Lloyd Container Line", founded in 1967 and operating from 1968 onward, was established to share the huge investments related to the containerisation of the fleets. The two companies finally merged on 1 September 1970, under the name Hapag-Lloyd. [4]
Hematology. Isolated primary immunoglobulin M deficiency[1] is a poorly defined dysgammaglobulinemia characterized by decreased levels of IgM while levels of other immunoglobulins are normal. The immunodeficiency has been associated with some clinical disorders including recurrent infections, atopy, Bloom's syndrome, celiac disease, systemic ...
Hyper IgM syndrome is a rare primary immune deficiency disorders characterized by low or absent levels of serum IgG, IgA, IgE and normal or increased levels of serum IgM. [8] They are resulting from mutations in the pathway from B-cell activation to isotype class switching. Patients with HIGM are usually diagnosed within the first two years of ...
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Isotype (immunology) Some antibodies form complexes that bind to multiple antigen molecules. In immunology, antibodies (immunoglobulins (Ig)) are classified into several types called isotypes or classes. The variable (V) regions near the tip of the antibody can differ from molecule to molecule in countless ways, allowing it to specifically ...
An antibody molecule. The two heavy chains are colored red, blue, and purple. The two light chains green and yellow. See also: [1] The immunoglobulin light chain is the small polypeptide subunit of an antibody (immunoglobulin). A typical antibody is composed of two immunoglobulin (Ig) heavy chains and two Ig light chains.
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] During this process, the constant-region portion of the antibody ...