<unk> ing is the use of<unk>  to stain histologic sections. This kind of staining is important especially to show proteins (for example type III collagen) and DNA. It is used to show both substances inside and outside cells.<unk> ing is also used in temperature gradient gel electrophoresis and in polyacrylamide gels.
Some cells are argentaffin. These reduce<unk>  solution to metallic<unk>  after formalin fixation. Other cells are argyrophilic. These reduce<unk>  solution to metallic<unk>  after being exposed to the stain that contains a reductant, for example hydroquinone or formalin.<unk>  nitrate forms insoluble<unk>  phosphate with phosphate ions. When subjected to a reducing agent, usually hydroquinone, it forms black elementary<unk> . This is used for study of formation of calcium phosphate particles during bone growth.<unk> ing is used in light microscopy. The metallic<unk>  particles are deposited on sensitised reticulin fibres and are then easily seen in the microscopic preparations.<unk>  aids in the perception of reticular fibers.
Silver stain
Periodic acid-Schiff stain
Polynoxylin
Dark field microscopy
Dot blot
Microscopy
Tzanck test
Nessler's reagent