<prompt> Metachromatic granules can be stained byAlbert stainGram stainGram-negative stainPrussian blue  <response>: Ref: Ananthnarayan, 9th ed. MedPub Albert stain is a type of differential stain used for staining the volutin granules also known as Metachromatic granules found in Corynebacterium diphtheriae. The name metachromatic is because of its property of changing color, i.e. when stained with blue stain they appear red in colour. When grown in Lofflers slopes, C. diphtheriae produces large number of granules. Stains used for C. Diphtheriae: Ponders stain Albert stain Neisser stain Loeffler methylene blue 