immunoglobulin G

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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 ?
The special populations listed are Alaskan natives and American Indians, children aged under 24 months with invasive Hih, preterm infants, and high-risk groups (those with functional or anatomic asplenia, HIV, IgG deficiency, early component complement deficiency, and recipients of hematopoietic stem cell transplant and chemotherapy).
The special populations listed are Alaskan natives and American Indians, children aged under 24 months with invasive Hib, preterm infants, and high-risk groups (those with functional or anatomic asplenia, HW, IgG deficiency, early component complement deficiency, and recipients of hematopoietic stem cell transplant and chemotherapy).
Igg kappa monoclonal gammopathy was confirmed by immunological reference laboratory on two further occasions with a rise in Igg kappa to 1 g/l and an associated Igg deficiency 3.