immunoglobulin G


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Related to immunoglobulin G: immunoglobulin M

immunoglobulin G

n. Abbr. IgG
1. The most abundant class of antibodies in blood and tissue, serving to promote phagocytosis of pathogens, neutralize toxins, and activate the complement system. Immunoglobulin G antibodies are the only antibodies that pass from mother to fetus through the placenta.
2. An antibody of this class.
ThesaurusAntonymsRelated WordsSynonymsLegend:
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
References in periodicals archive ?
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.
The cartridges use affinity-purified polyclonal antibodies to remove more than 98 percent of the six most abundant proteins (albumin, immunoglobulin G, immunoglobulin A, alpha-1-antitrypsin, transferrin and haptoglobin) in human serum and the three most abundant proteins (albumin, immunoglobulin G and transferrin) in mouse serum, with minimal non-specific removal of other proteins.
Extensive cultures and serologic studies for microbial and viral infections were all negative, whereas tests for immunoglobulin G and immunoglobulin M antibodies against the mumps virus were both positive.
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