- 
  
  The Cell Theory we know today:
 1.All organism are composed of one or more cells
 2.The cell is the basic unit of stucture and organization in organisms
 3.All cells come from pre-existing cells
- 
  
  Invented the first compound Microscope
- 
  
  named ''cells'' cells
- 
  
  discovered bacteria from his own saliva and called them "animalcules".
- 
  
  This microscope helped the cell theory develop.
- 
  
  discovered plant cells
- 
  
  discovered that animals had cells.
- 
  
  discovered that all living organism come from other living organisms.
- 
  
  Proved Rudolph's theory and said that all cells get from pre-existing cells as Rudolph said