| Date | 1837 |
| Author | Kutzing |
| Contribution | c. Reported that yeast cells are pleomorphic. |
| Reference | Bullock |
| Notes | The alleged ability of microorganisms to adopt morphologically different forms was much debated, and complicated the early evolution of the Germ Theory. |
| Category | Miscellany |
| Pathogen Class | Fungi |
Copyright © 2007- William C. Campbell. All rights reserved.