methenamine-silver

methenamine-silver
A hexamethylenetetramine-silver complex prepared by adding silver nitrate to methenamine; a white precipitate appears in the solution which dissolves upon shaking and is stable under refrigeration; used in various histological and histochemical staining methods. SEE ALSO: Gomori methenamine-silver stain, under stain.

Medical dictionary. 2011.

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  • methenamine silver — a solution of methenamine and silver nitrate, used as a histopathological stain to demonstrate fungal cell walls, Donovan bodies, and Klebsiella pneumoniae rhinoscleromatis. Methenamine silver used to demonstrate a cluster of Pneumocystis… …   Medical dictionary

  • methenamine silver stain — 1. (for argentaffin cells) a methenamine silver solution used together with gold chloride, sodium thiosulfate, and a safranin O counterstain; argentaffin granules are black while granules of mast cells remain red. 2. (for fungi) Grocott Gomori… …   Medical dictionary

  • methenamine silver — see under methenamine …   Medical dictionary

  • Gomori methenamine silver (GMS) stain — methenamine silver s …   Medical dictionary

  • Silver stain — A silver stain (GMS) demonstrating the fungus histoplasma (black round balls) in a liver biopsy. Silver staining is the use of silver to selectively alter the appearance of the target. Contents …   Wikipedia

  • Grocott-Gomori methenamine-silver stain — See under stain …   Medical dictionary

  • Grocott-Gomori methenamine–silver nitrate stain — a method for demonstrating actinomycetes and fungi in tissue. Sections are treated with chromic acid, stained with methenamine silver nitrate solution, and counterstained with light green solution. Cells appear brown against a green background …   Medical dictionary

  • stain — 1. To discolor. 2. To color; to dye. 3. A discoloration. 4. A dye used in histologic and bacteriologic technique. 5. A procedure in which a dye or combination of dyes and reagents is used to color the constituents of cells and tissues. For… …   Medical dictionary

  • Hexamethylenetetramine — IUPAC name …   Wikipedia

  • GMS — Abbreviation for Gomori methenamine silver stain, under stain. * * * General Medical Service; geriatric mental state; Gilbert Meulengracht syndrome; glyceryl monostearate; Gomori methenamine silver [stain]; goniodysgenesis mental retardation… …   Medical dictionary

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