Staining is an auxiliary technique used in microscopy to enhance contrast in the microscopic image. Stains and dyes are frequently used in biology and medicine to highlight structures in biological tissues for viewing, often with the aid of different microscopes. Stains may be used to define and examine bulk tissues (highlighting, for example, muscle fibers or connective tissue), cell populations (classifying different blood cells, for instance), or organelles within individual cells.

In biochemistry it involves adding a class-specific (DNA, proteins, lipids, carbohydrates) dye to a substrate to qualify or quantify the presence of a specific compound. Staining and fluorescent tagging can serve similar purposes. Biological staining is also used to mark cells in flow cytometry, and to flag proteins or nucleic acids in gel electrophoresis.

Staining is not limited to biological materials, it can also be used to study the morphology of other materials for example the lamellar structures of semi-crystalline polymers or the domain structures of block copolymers.

Read more about StainingIn Vivo Vs In Vitro, Common Biological Stains, Stainability of Tissues, Electron Microscopy

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Staining (disambiguation)
... Staining is a local discoloration ... Staining may refer to one of the following ... Staining, dyeing of organic matter in the laboratory Wood staining, a wood treatment Staining, Lancashire, a village in Lancashire All Hallows Staining a former church in ...
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... Staining and labeling techniques are often used in microscopy to help identify specific structures in a cell ... Staining usually involves the use of dyes that are absorbed by various cell structures at different rates ... In the case of dendritic spikes, staining and labeling are used to identify and quantify the presence of certain voltage-gated channels ...
Follicular Dendritic Cell Sarcoma - Diagnosis - Staining
... two nuclei, and form clusters with lymphocytes making them difficult to distinguish in staining ... Because of the debate and difficulty of staining, pathologic diagnosis often requires morphologic, cytochemical and electron microscope analysis as well ...