(meth-en'ă-mēn sĭl'vĕr),
A hexamethylenetetramine-silver complex prepared by adding silver nitrate to methenamine; a white precipitate, which dissolves upon shaking and is stable under refrigeration, appears in the solution; used in various histological and histochemical staining methods.
See also: Gomori methenamine-silver stain.
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D) Grocott's methenamine-silver stain showing broad-based budding yeast.
The Grocott-Gomori methenamine-silver nitrate stain allowed the better visualisation of chains of darkly pigmented, spheroidal, yeastlike organisms (Figure 3).
6) A variety of stains, including H & E, Grocott-Gomori methenamine-silver nitrate, and PAS frequently reveal characteristic hyphal elements in tissue.
The histochemical stain results for acid-fast bacilli (Ziehl-Neelsen) and fungi (Gomori methenamine-silver stain) were likewise negative.
Tissues were sectioned in 5-[micro]n slices and were subsequently stained with hematoxylin and eosin, Gram's, Ziehl-Neelsen, periodic acid--Schiff, and Grocott methenamine-silver techniques.
Ziehl-Neelsen and Brown and Brenn stains were again non-contributory, but a Grocott-Gomori methenamine-silver stain (Fig.
2001); using special stains H & E (hematoxylineosin) or methenamine-silver stain (Pirani, 1996).
Stains for acid-fast bacilli with Grocott-Gomori methenamine-silver nitrate were negative.
Gomori methenamine-silver stain of transbronchial and thoracic lymph node biopsy specimens from a hospitalized student revealed the presence of yeasts consistent with H.
Special staining by Grocott-Gomori methenamine-silver nitrate [Figure.
4) The organisms are readily apparent with the use of special histochemical stains, such as Gridley fungus stain, periodic acid-Schiff (with or without diastase), and Gomori methenamine-silver stain (Figure 3).
Grocott methenamine-silver and acid-fast stains were negative for fungal and mycobacterial organisms, respectively.