ige
Definition
Noun: 1. A class of immunoglobulins (antibodies): IgE is one of the five main classes of antibodies (immunoglobulins) produced by the immune system. It is primarily found bound to mast cells and basophils in the skin and mucous membranes.
Usage
IgE is a scientific and medical term. It is used as a singular noun, often in the context of immunology, allergies, and certain immune responses. * Typical Contexts: Discussing allergic reactions (e.g., hay fever, asthma, food allergies), parasitic infections, or immunological disorders.
Examples
- Noun:
- The blood test revealed high levels of IgE, confirming the diagnosis of an allergic condition.
- In type I hypersensitivity reactions, an allergen cross-links IgE molecules on the surface of mast cells.
- Unlike IgG, which circulates in the blood, IgE is primarily located in tissues.
Advanced Usage
- "IgE-mediated": This adjective describes a process or reaction that is triggered by the activation of IgE antibodies.
- Anaphylaxis is a severe, life-threatening IgE-mediated allergic reaction.
Variants and Related Words
- Immunoglobulin E: The full, formal name for IgE.
- Reagin: An older, less specific term sometimes used synonymously with IgE, particularly in the context of allergy testing.
Synonyms
- Immunoglobulin E (full name)
- There are no common non-scientific synonyms for this precise term.
Different Meanings
This word has only one specific meaning in modern scientific English, referring to the immunoglobulin class. It is not used in general vocabulary.
Notes
- Capitalization: "IgE" is always written with a capital 'I' and 'g', and a lowercase 'e'. It is an abbreviation for "Immunoglobulin E".
- Pronunciation: It is pronounced by saying each letter: "I - G - E".
- Related Terms: The other major immunoglobulin classes are IgA, IgD, IgG, and IgM.
Noun
-
one of the five major classes of immunoglobulins; present primarily in the skin and mucous membranes
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