Cyanine
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Cyanine, also known as quinoline blue, is a brilliant green crystalline dye that is sparingly soluble in cold water and easily soluble in alcohol. Introduced into histological practice in 1856, it was used as a fat stain and, in combination with quinoline red, for sensitizing photographic plates.
Encyclopedia entry (1928–1936)
CYANINE, syn. chinolinblau, quinoline blue, brilliant green crystals, very difficultly soluble in cold water, more easily in hot, and readily soluble in alcohol; introduced into histological practice by Williams in 1856. A saturated solution in 70% ethanol is used as a fat-staining agent. In a mixture with quinoline red, it is used for the sensitization of photographic plates.
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“Cyanine.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/cyanine/