| A | B |
|---|
| Hooke | First saw and named cells. |
| Brown | Discovered the nucleus |
| Schleiden | Discovered the plants were made of cells |
| Schwann | Discovered that animals were made of cells |
| Virchow | Discovered that all cells come from other cells |
| Leuwenhoek | First saw tiny living "animalcules" |
| Bacteria | Do not have nuclei |
| Microscope | The invention enable scientists to first see cells. |
