<prompt> Adjuvant used in DPT vaccine isZincAluminiumCopperMagnesium  <response>: Ans. is b i.e. Aluminium DPT vaccine is of two types : plain adsorbedAluminium phosphate or Aluminium hydroxide is used as adsorbent.Adsorption increases the immunological effectiveness.WHO recommends use of only adjuvant DPT vaccines in immunization programmes?Also know - Pertussis component in DPT vaccine enhances the potency of the diphtheria toxoid. 