| A | B |
|---|
| 1674 van Leeuwenhoek | microorganisms with a 1 lens microscope |
| 1590 Jannsen | made the first microscope with 2 lenses in a tube |
| 1021 Alhazen | magnifying glass described |
| 1284 D'Armate | wearable reading glasses |
| 1665 Hooke | cells described |
| 1830 Lister | compound microscope |
| 1850's Spencer | improved magnification to 1250X, 5000X with blue light |
| 1873 Leitz | revolving nose-piece |
| 1661 Malpighi | described microscopic structure of organ tissues |
| 1879 Flemming | discovered mitosis |
| 1880-1890 Koch and Pasteur | investigate bacteria and disease |
| 1883 Brown | describes the nucleus |
| 1838 Schleiden | plants are made of cells |
| 1839 Schwann | animals are made of cells |
| 1855 Virchow | cells come from other cells |
| 1898 Golgi | described Golgi apparatus |
| 1835 Dujardin | discovery of cytoplasm |
