Type I Hypersensitivity Can Be Treated by Injecting a Specific

Multiple Choice

Type I hypersensitivity can be treated by injecting a specific recombinant humanized IgG called omalizumab.This antibody:

A) binds allergens, preventing them from binding patient IgE.
B) occupies Fc receptors on mast cells, preventing binding by patient IgE.
C) binds to a heavy-chain domain on patient IgE, preventing the IgE from binding to mast cells.
D) inhibits Th2 cells that would otherwise promote excess IgE production.