Immunoglobulin that is inactive at high temperature is?: (A) IgG, (B) IgA, (C) IgM, (D) IgE
Answer is D. IgE is heat liable ie, inactivated when heated from 5 min up to1 hr at 56 degrees. Reff: Ananthanarayan & Panikers textbook of microbiology 9th edition pg:99