| Date | 1883 |
| Author | Neelsen |
| Contribution | Modified Ziehl's method of staining tubercle bacilli. |
| Reference | Brock |
| Notes | Nielsen introduced the use of basic fuchsin, with methylene blue as a counterstain, creating the famed Ziehl-Nielsen stain. See 1882. Ehrlich's method was also modified by Rindfleisch (Foster). |
| Category | Miscellany |
| Pathogen Class | Bacteria |
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