| Date | 1884 |
| Author | Koch |
| Contribution | c. Published 88-page work "The Etiology of Tuberculosis," expanding the demonstration of 1882. |
| Reference | Brock |
| Notes | See 1882. It was in this work that Koch published the two-color lithographs of tubercle bacilli in host tissues. He also stated more precisely his famous postulates. |
| Category | Causation |
| Pathogen Class | Bacteria |
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