- 
  
  .created first microscope
.Dutch lens grinders, father and son - 
  
  .English scientist
.looked at a thin slice of cork (oak cork) through a compound microscope
.observed tiny, hollow, roomlike structures - 
  
  .Dutch fabric merchant and amateur scientist
.looked at blood, rainwater, scrapings from teeth through a simple microscope
.observed living cells; called some 'animalcules - 
  
  .German botanist
.viewed plant parts under a microscope
.discovered that plant parts are made of cells - 
  
  .German zoologist
.viewed animal parts under a microscope
.discovered that animal parts are made of cells - 
  
  .German zoologist
.viewed animal parts under a microscope
.discovered that animal parts are made of cells - 
  
  .German physician
.stated that all living cells come only from other living cells