Bacteriologist Question:

Metachromatic granules are pol’ymetaphosphate reserves produced by Corynebacterium diphtheriae in nutritious medium. These granules are also known as Babes Ernst granules. ‘blutin granules. Polar bodies etc. They are called metachromatic granules because of they exhibit metachromasia.

a property where the granules appear in a colour different from that of the dye used When stained with polychrome methylene blue, they appear purple They are produced In abundance In serum containing medium such as Loeffler’s serum slope.