n :  a carbolfuchsin stain used esp. for detecting the tubercle bacillus
 
Ziehl, Franz (1857-1926), German bacteriologist. A professor in Lübeck, Ziehl introduced the carbolfuchsin stain for the tubercle bacillus in 1882.
 
Neelsen, Friedrich Carl Adolf (1854-1894), German pathologist. Neelsen published a handbook of staining methods in 1892.
 
 
 
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