IgE is secreted by -: (A) Mast cell, (B) Basophils, (C) Eosinophils, (D) Plasma cells
Answer is D. IgE is synthesised by plasma cells. Monomers of IgE consist of two heavy chains (e chain) and two light chains, with the e chain containing 4 Ig-like constant domains Reff: Ananthanarayanan & Panikers textbook of microbiology 9th edition pg:136