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.
fixed and stained. to make them more visible. Staining provides a reliable means for observing bacteria in terms of their relative size, morphology and cellular arrangement. Stains are solutions of a dye that has been dissolved in water or alcohol. The dye is a salt (like Na+Cl-).