7. Type I hypersensitivity reaction is caused by an -mediated immune response whose main physiological role is to defend against parasite infection, while Type IV hypersensitivity is mediated by cells
(A) IgG; naïve T
(B) IgE; Ag-specific B cells
(C) IgE; mast cells
(D) IgG; dendritic cells
(E) IgE; Ag-specific T cells

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