| Date | 1884 |
| Author | Metchnikoff |
| Contribution | b. Reported phagocytosis in anthrax, and promoted cellular theory of immunity. |
| Reference | Silverstein |
| Notes | According to Silverstein, the debate between cellular and humoral concepts of immunity ebbed and flowed during the ensuing decade. Metchnikoff's theory followed more or less immediately on the heels of the early germ theory victories and became part of the new understaning of infectious disease. |
| Category | Immunology |
| Pathogen Class | Bacteria |
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