This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
IgE is secreted by - 
Select and explain. 
A. Mast cell, B. Basophils, C. Eosinophils, D. Plasma cells
D: Plasma cells
Answer: D: Plasma cells 
Explanation: 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