| Date | 1899 |
| Author | Deutsch |
| Contribution | Reported that removal of spleen of guinea pigs reduced the level of antibodies in blood. |
| Reference | Anon. |
| Notes | Also that implantation of spleen in peritoneal cavity resulted in appearance of antibodies in recipient animal. See 1898. |
| Category | Immunology |
| Pathogen Class | Bacteria |
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