IgE, or Immunoglobulin E, is a type of antibody that plays a critical role in the body's immune response, particularly in allergic reactions and the defense against parasitic infections. When the body encounters an allergen, IgE antibodies bind to the allergen and trigger the release of chemicals, such as histamine, from mast cells and basophils. This response can lead to symptoms ranging from mild allergic reactions to severe anaphylaxis.
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