The Ziehl–Neelsen stain, also known as the acid-fast stain, was first described by two German doctors: the bacteriologist Franz Ziehl (1859–1926) and the pathologist Friedrich Neelsen (1854–1898).
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A variation on this staining method is used in mycology to differentially stain acid-fast incrustations in the cuticular hyphae of certain species of fungi in the genus Russula.
The Human Stain | The Adventure of the Second Stain | Port-wine stain | naevus flammeus aka "port-wine stain" variety | '''Masson's trichrome''' stain of rat airway. Connective tissue | Masson's trichrome stain | Hoechst stain | Grocott's methenamine silver stain | Franz Ziehl |