Discovery of cell

How cell was discovered???

1. In 1856 Galileo invented microscope.
2. In 1865 Robert Hook made a combined lenses microscope and observed a slice of cork
3. He observed small honey comb chambers.
4. In 1866 Dichrot boiled plant material and observed cell.
5. Shielden and Shawn proposed cell theory that plants and animals are made up of cell,respectively.