Grocott's methenamine silver stain
From Infogalactic: the planetary knowledge core
A liver biopsy stained using the grocott's methenamine silver stain demonstrating histoplasma (black round balls) in a granuloma.
In pathology, the Grocott-Gomori's (or Gömöri) methenamine silver stain, abbreviated GMS, is a popular staining method in histology.
It is used widely as a screen for fungal organisms. Particularly useful in staining carbohydrates.
It can be used to identify the yeast-like fungus Pneumocystis jiroveci[1] which causes a form of pneumonia called Pneumocystis Pneumonia (PCP) or Pneumocystosis.
The cell walls of these organisms are outlined by the brown to black stain.
See also
References
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