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Human Body & Health

If a researcher introduces an anti-IgE antibody into a patient experiencing seasonal allergies, which consequence affecting mast cell activity is most likely?

A)Increased histamine granule exocytosis
B)Enhanced antigen presentation by mast cells
C)Upregulation of FcεRI receptor synthesis
D)Reduced IgE binding to mast cells

💡 Explanation

Introducing anti-IgE antibodies reduces mast cell activation because these antibodies bind to free IgE, preventing its attachment to FcεRI receptors on mast cells; therefore, mast cell degranulation and histamine release are inhibited, rather than enhanced, thus lessening allergic symptoms.

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