Microbiology General dfaaa0f3 Which of the following statement is true ? A Paul Bunnell test is used to diagnose measles B Rose Waaler test is a complement fixation test C Indirect hemagglutination test is less sensitive than gel diffusion test D Antigen antibody reaction cannot occur in the absence of electrolytes High-Yield Explanation Ans. is 'd' i.e., Antigen Antibody reaction cannot occur in the absence of electrolytes