immunoglobulin definition
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Immunoglobulin Immunoglobulin. Definition. noun, plural: immunoglobulins. (1) Any of several classes of structurally related proteins in the blood serum, produced by plasma cells as an immune response against foreign agents (antigens).(2) The fraction of the blood serum containing antibodies.Supplement.oun, plural: immunoglobulins. (1) Any of several classes of structurally related proteins in the blood serum, produced by plasma cells as an immune response against foreign agents (antigens). (2) The fraction of the blood serum containing antibodies.
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- An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shape protein produced by plasma cells that is used by the immune system to identify and neutralize pathogens such as bacteria and viruses. The antibody recognizes a unique molecule of the harmful agent, called an antigen, via the variable region.hough strictly speaking, an antibody is not the same as an immunoglobulin; B cells can produce two types of immunoglobulins-surface immunoglobulins, which are B cell receptors; and secreted immunoglobulins, which are antibodies.
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Immunoglobulin G Immunoglobulin G (IgG) is a type of antibody. Each IgG has two antigen binding sites. Representing approximately 75% of serum antibodies in humans, IgG is the most common type of antibody found in the circulation. IgG molecules are created and released by plasma B cells.
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- Each antibody binds to a specific antigen; an interaction similar to a lock and key. An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shape protein produced by plasma cells that is used by the immune system to identify and neutralize pathogens such as bacteria and viruses.The antibody recognizes a unique molecule of the harmful agent, called an antigen, via the variable region.he ability of an antibody to communicate with the other components of the immune system is mediated via its Fc region (located at the base of the Y), which contains a conserved glycosylation site involved in these interactions. The production of antibodies is the main function of the humoral immune system.
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MOLECULES, CELLS, AND TISSUES OF IMMUNITY Immunoglobulin superfamily. The immunoglobulin superfamily is a group of cell surface proteins characterized by the presence of a variable number of related
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Definitions &Translations Freebase(0.00 / 0 votes)Rate this definition: Globulin. The globulins are a family of globular proteins that have higher molecular weights and water solubility values than the albumins. Some globulins are produced in the liver, while others are made by the immune system.
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- Intravenous immune globulin (IVIG) is a product made up of antibodies that can be given intravenously (through a vein). Antibodies are proteins that your body makes to help you fight infections. Each antibody made by your body is slightly different, because it fits like a lock and key to every foreign substance (such as a virus) that gets into your body.
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- Immunoglobulins are glycoprotein molecules that are produced by plasma cells in response to an immunogen and which function as antibodies. The immunoglobulins derive their name from the finding that they migrate with globular proteins when antibody-containing serum is placed in an electrical field (Figure 1).ach immunoglobulin actually binds to a specific antigenic determinant. Antigen binding by antibodies is the primary function of antibodies and can result in protection of the host. The valency of antibody refers to the number of antigenic determinants that an individual antibody molecule can bind.
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Antibody Immunology An immunoglobulin produced by plasma cells, which has a specific amino acid sequence and specifically binds to the antigen(s)–eg, foreign proteins, microbes or toxins, that induced its synthesis; antibodies may bind to closely related antigens.ntibody production, its interaction with a specific antigen, and the activation of complement (C), an interrelated group of eleven proteins, are the major components of the humoral system of immunity.
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globulin Medical Definition of globulin. : any of a class of simple proteins (as myosin) that are insoluble in pure water but are soluble in dilute salt solutions and that occur widely in plant and animal tissues—see alpha globulin, beta globulin, gamma globulin.
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superfamily superfamily a group of proteins related in structure but different in function, e.g. immunoglobulin superfamily which includes immunoglobulins, T cell receptor, major histocompatibility class I and II, β 2-microglobulin, α/β glycoprotein, neuronal cell-adhesive molecule (N-CAM) and neurocytoplasmic protein 3 (NP3).
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What are antibodies in the blood? Antibodies (also known as immunoglobulins, abbreviated Ig) are gamma globulin proteins that are found in blood or other bodily fluids of vertebrates, and are used by the immune system to identify and neutralize foreign objects, such as bacteria and viruses.
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- More Information: Antibodies (also known as immunoglobulins, abbreviated Ig) are gamma globulin proteins that are found in blood or other bodily fluids of vertebrates, and are used by the immune system to identify and neutralize foreign objects, such as bacteria and viruses.he main non-specific defenses consist of: Lysozymes-such as teardrops which attack bacterial cell walls causing the cell to burst or lyse. Ciliated Epithelia-which are hairlike fibers that can catch pathogens and dispose of them.
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Immunoglobulins  [en EspaÃ±ol] Test Overview. An immunoglobulins test is done to measure the level of immunoglobulins, also known as antibodies, in your blood. Antibodies are substances made by the body's immune system in response to bacteria, viruses, fungus, animal dander, or cancer cells. Antibodies attach to the foreign substances so the immune system can destroy them. Antibodies are specific to each type of foreign substance.
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Intravenous Immunoglobulin Immune globulin products from human plasma were first used in 1952 to treat immune deficiency. Intravenous immunoglobulin (IVIG) contains the pooled immunoglobulin G (IgG) immunoglobulins from the plasma of approximately a thousand or more blood donors. Initially, immune globulin products were administered by intramuscular injection.
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Globulins Globulins are immune molecules that are produced by the immune system in response to invasion of the body of agents that are perceived by the system as being foreign. Some immune globulins are also known as antibodies. Examples of microorganisms that stimulate globulin production are bacteria , viruses , molds, and parasites .
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Antibody An immunoglobulin produced by plasma cells, which has a specific amino acid sequence and specifically binds to the antigen(s) (e.g., foreign proteins, microbes or toxins) that induced its synthesis; antibodies may also bind to closely related antigens.ntibody production, its interaction with a specific antigen, and the activation of complement (C), an interrelated group of eleven proteins, are the major components of the humoral system of immunity.
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- Definition of the immunoglobulin class of the paraprotein by immunofixation (immunoglobulin heavy and light chain isotype) This is important as the type may direct future investigations. Myeloma is commonly associated with an IgG or IgA paraprotein, rarely IgD or IgE (see fig 2⇑).
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Mixed Connective Tissue Disease: MCTD Explained What It Is. An immunoglobulin test measures the level of certain immunoglobulins, or antibodies, in the blood. Antibodies are proteins made by the immune system to fight antigens, such as bacteria, viruses, and toxins. The body makes different immunoglobulins to combat different antigens.
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Medical Definition of Immunoglobulin A Immunoglobulin A: A major class of immunoglobulins (antibodies) found in serum and external body secretions such as saliva, tears, and sweat, as well as in the gastrointestinal, respiratory, and genitourinary tracts.Abbreviated IgA.mmunoglobulin A: A major class of immunoglobulins (antibodies) found in serum and external body secretions such as saliva, tears, and sweat, as well as in the gastrointestinal, respiratory, and genitourinary tracts. Abbreviated IgA.
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Immunoglobulins  [en EspaÃ±ol] Test Overview. An immunoglobulins test is done to measure the level of immunoglobulins, also known as antibodies, in your blood. Antibodies are substances made by the body's immune system in response to bacteria, viruses, fungus, animal dander, or cancer cells.
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Immunoglobulin A Immunoglobulin A (IgA, also referred to as sIgA) is an antibody that plays a crucial role in the immune function of mucous membranes. The amount of IgA produced in association with mucosal membranes is greater than all other types of antibody combined. In absolute terms, between three and five grams are secreted into the intestinal lumen each day. This represents up to 15% of total immunoglobulins produced throughout the body.
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Definitions &Translations Wiktionary (0.00 / 0 votes) Rate this definition: immunoglobulin (Noun). Any of the glycoproteins in blood serum that respond to invasion by foreign antigens and that protect the host by removing pathogens; an antibody.iktionary (0.00 / 0 votes) Rate this definition: immunoglobulin (Noun). Any of the glycoproteins in blood serum that respond to invasion by foreign antigens and that protect the host by removing pathogens; an antibody.
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immunoglobulin Ig. 1  1. Any of a group of large glycoproteins, including all the antibodies that function in the vertebrate immune system, that have a structure consisting of two heavy chains and two light chains. 2  2. A preparation containing immunoglobulin proteins, especially immune globulin.
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Immunoglobulin Immunoglobulins (Ig) are glycoprotein molecules that function as antibodies. Since antibodies are present in the bloodstream or bound to cell membranes, they are considered to be a part of the humoral immune system. During an immune response, immunoglobulins bind to specific antigens (any foreign substance that is capable of inducing an immune response). Examples of antigens include bacteria, viruses, mold spores, dust mites, animal dander and fungus.
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What Are Antibodies? - Definition, Function & Types Antibodies, also known as immunoglobulins, are Y-shaped proteins that are produced by the immune system to help stop intruders from harming the body. When an intruder enters the body, the immune system springs into action.