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.
â¢Donât destroy cell arrangements & morphology (shape)! â¢ Simple stain (e.g., crystal violet) â One dye only; shows cell size, shape, arrangement â Many simple stains use cationic, or basic, dyes which are attracted to the negatively charged cell membrane â¢ Differential stain (e.g., Gram stain) â 2 or more dyes two distinguish between different kinds of organisms, or different parts of an organism â¢ Some stains include a mordant (a chemical which helps stain retention) Internal cell structures of prokaryotes