The antibody most involved in triggering an allergic reaction is
A)immunoglobulin E.
B)gamma globulin.
C)mast cells.
D)histamine.

Question

Quizplus · Accepted Answer

Immunoglobulin E (IgE) is the antibody most involved in triggering an allergic reaction. When a person with an allergy is exposed to an allergen (e.g. pollen or dust), their body produces IgE antibodies which then bind to mast cells and basophils. When the person is exposed to the allergen again, the allergen triggers the IgE antibodies to signal to the mast cells and basophils to release histamine and other chemicals, which leads to the symptoms of an allergic reaction. Gamma globulin is a term used to describe a group of proteins in blood plasma that includes IgG, IgM, and IgA. Mast cells and histamine are not antibodies, but rather factors involved in the allergic response.

The Antibody Most Involved in Triggering an Allergic Reaction Is