Janssen: "WOW! I have created the first microscope/ telescope!"
1590
Plant Cell
Hooke: "The structure of this cork looks very similar to the structure of a plant cell under the microscope. Each of them have cell likestructure."
1665
Leeuwenhoek: "Under this microscope I have observed the first bacteria!"
1667
Bacteria
1831
Brown: After examining cells, I discovered the nucleus!
Nucleus
Schwann and Schleiden: We have discovered that all plant and animal tissues are composed of cells, and within an individual organism all the cells are identical. Leading to the cell theory. Incredible!
1838
1858
Virchow: "I have just discovered that all cells come from preexisting cells."