| Date | 1840 |
| Author | Anon. |
| Contribution | Achromatic objectives achieved major impact, 1830 - 1850. |
| Reference | Bradbury |
| Notes | The work enabled by these lenses laid the foundation of cell biology, histology and cellular pathology. Those advances (especially on the Continent) in turn stimulated further advances in the microscope in the second half of the 19th Century. |
| Category | Microscopy |
| Pathogen Class | General |
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