Warthin-Starry silver stain


Warthin-Starry silver stain
a method for staining Bartonella and spirochetes. A smear is air-dried, immersed in absolute ethanol, washed in distilled water, and incubated in 2 per cent silver nitrate. The cover glass is then developed in a mixture of silver nitrate, gelatin, glycerol, agar, and hydroquinone. Organisms appear black on a light background.

Medical dictionary. 2011.

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