Development of Cell Theory

• Robert Hooke used a crude microscope and found cellulae (a latin word means "little room"
• Robert Hooke called the cellulae, cells, and found it was outer walls of former plant cells
• Anton Van Leeuwenhoek found moving protist and called animalcules
• Felix Dujardin discovered the internal substances of living cells and gave it the name sarcode.
• Jan Evangelista Purkinje coined the word protoplasm (substance inside the cell.)
• Rudolf Von Kolliker introduced the word cytoplasm in 1863 (synonym of protoplasm)
• Robert Brown - Discovered nucleus and established it as the fundamental and constant component of the cell.
• Theodore Schwann - German zoologist and physiologist who theorized that animals are made up of cells.
• Mathias Schleiden - German botanist who theorized that plants are made up of cells.
• Rudolf Virchow - Theorized that living cells came from pre-existing cells.