IgG

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Definition
  1. Noun:
    • A specific class of immunoglobulin: IgG is one of the five major classes of antibodies (immunoglobulins) found in the blood and tissue fluids of the immune system. It is the most abundant antibody type and plays the primary role in the long-term defense against bacterial and viral infections.
Usage Examples
  • Noun:
    • The doctor measured the patient's IgG levels to assess their immune response.
    • Maternal IgG antibodies provide passive immunity to the newborn.
    • A deficiency in IgG can make a person more susceptible to infections.
Advanced Usage
  • "IgG subclass": Refers to one of the four subtypes of IgG (IgG1, IgG2, IgG3, IgG4), each with slightly different roles in the immune response.
    • The test can differentiate between the different IgG subclasses.
  • "IgG-mediated": Describes an immune reaction or process that is primarily carried out by IgG antibodies.
    • The protection against tetanus is an IgG-mediated response.
Variants and Related Words
  • Immunoglobulin G: The full, formal name for IgG.
  • Antibody: A general term for a protein produced by the immune system to neutralize pathogens; IgG is a type of antibody.
  • Immunoglobulin: The broader class of proteins to which IgG belongs; the other major classes are IgA, IgM, IgD, and IgE.
Synonyms
  • Immunoglobulin G: The formal synonym.
  • Gamma globulin: A broader, somewhat dated term for serum proteins that include immunoglobulins like IgG.
Related Phrases
  • IgG antibody: A common phrasing to specify the type of antibody.
    • The vaccine aims to stimulate the production of IgG antibodies.
  • IgG deficiency: A medical condition characterized by low levels of IgG antibodies.
    • He was diagnosed with an IgG deficiency and requires regular treatment.
Noun
  1. one of the five major classes of immunoglobulins; the main antibody defense against bacteria

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