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
Immunoglobulin inactive by heating and elevated in helminthic infections: 
Select and explain. 
A. IgA, B. IgG, C. IgE, D. IgM
C: IgE
Answer: C: IgE 
Explanation: Ans. is 'c' i.e., IgE(Ref: Harrison, 18th/e, p. 2674)* It is only Ig which is heat labile (inactivated at 56degC for one hour), daily production is minimum and has shortest half-life.