| Date | 1839 |
| Author | Purkinje |
| Contribution | Introduced microtome, Canada balsam and other elements of standard microscopical technique. |
| Reference | Garrison |
| Notes | He had to overcome prejudice against the usefulness of microscopes in medicine, even to the point of working surreptitiously with a microscope. |
| Category | Microscopy |
| Pathogen Class | General |
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