| Date | 1870 |
| Author | Langhans |
| Contribution | Reported erythrocytes inside leucocytes around hemorrhagic foci. |
| Reference | Anon. |
| Notes | Precursor of the phagocyte concept that was soon to become prominent in medical bacteriology. |
| Category | Immunology |
| Pathogen Class | General |
Copyright © 2007- William C. Campbell. All rights reserved.