Two Dutch scientists named Dr. Jensen and his father made the very first microscope.
Another Dutch scientist named Leeuwenhoek made a compound microscope. He also, looked at all of the plants.
Robert Hooke, an English scientist, He discoverd and cut a cork slice using a compound microscope. He only saw cell walls as this was dead tissue.
The three parts of cell theory are
#1 All known living things are made up of one or more cells
#2 All living cells arise from pre-existing cells by division.
Rudolph Virchow founded out that all cells are made for pre-existing.
Schleiden studied plant structure under the microscope. He also recognized the importance of the cell nucleus.
He realized that animals had cells in the their body.