| Date | 1875 |
| Author | Kelsch |
| Contribution | Saw malarial pigment in clear protoplasmic bodies as well as in leucocytes; did not recognize these bodies as parasites. |
| Reference | Harrison |
| Notes | Achille Kelsch. As a pathologist he mostly examined fixed tissues. Also saw pigment in fresh blood film and realized its diagnostic value. Laveran knew of this work, but never cited it. |
| Category | Miscellany |
| Pathogen Class | Protozoa |
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