| Date | 1874 |
| Author | Roberts |
| Contribution | Reported observations on antagonism between bacteria and microscopic fungi such as Penicillium glaucum. |
| Reference | Lechevalier |
| Notes | William Roberts. The observations were made in the course of in vitro cultivation, and while they may be said to foreshadow the antibiotic era, their therapeutic implications were not recognized. |
| Category | Miscellany |
| Pathogen Class | Bacteria |
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