1 Used other than as an idiom: see outer ,â core. ( 2 planetology) The hot liquid material found near the centre of some planets, distinct from the solid inner core. ( 3 geology) The part of the Earth between the mantle and inner core, responsible for generating the planet's magnetic field. 4  Link/Cite.
Differential Staining is a staining process which uses more than one chemical stain. Using multiple stains can better differentiate between different microorganisms or structures/cellular components of a single organism.
In a simple stain a basic dye is added to a population of bacteria that has been fixed to the surface of a microscope slide such that all cells in the population take on the color of the dye used. In the second set of exercises you will be performing a. Gram stain. (a type of. differential stain.