Microbiology Virology 06b2f598 MgCl2 is added to polio vaccine because of the following - A Potentiates the vaccine B Vaccine can be kept at higher temperatures C Preservative D None of the above High-Yield Explanation molar MgCl2 is used to dtabilise the vaccine against heat inactivation REF:ANATHANARAYANAN MICROBIOLOGY NINTH EDITION PAGE.488