Bismarck brown y

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Bismarck brown y

a diazo dye used for staining mucin and cartilage in histologic sections, in the Papanicolaou technique for vaginal smears, and as one of Kasten's Schiff-type reagents in the pas and Feulgen stains.

Synonym: vesuvin.

Origin: Ger. Bismarckbraun, after otto von Bismarck, Ger. Chancellor