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immunoglobulin G

   Also found in: Medical, Acronyms, Encyclopedia, Wikipedia 0.02 sec.
immunoglobulin G
n. Abbr. IgG
The most abundant class of antibodies found in blood serum and lymph and active against bacteria, fungi, viruses, and foreign particles. Immunoglobulin G antibodies trigger action of the complement system.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.immunoglobulin G - one of the five major classes of immunoglobulins; the main antibody defense against bacteria
Ig, immune gamma globulin, immune globulin, immune serum globulin, immunoglobulin - a class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response


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Serum electrophoresis and immunofixation showed an increased [gamma]-globulin fraction with oligoclonal immunoglobulin G (IgG)[lambda] and IgG[kappa] components.
Saxon, Kepley, and colleagues constructed GE2 by combining Fc[epsilon]RI and Fc[gamma]RIIb, which are receptor binding regions of immunoglobulin E (IgE) and immunoglobulin G, respectively.
To strengthen the vaccine, the researchers added either two naturally occurring mammalian proteins called interleukin-2 and immunoglobulin G or the DNA that encodes those proteins.
 
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