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Robert Hooke discovered cells in 1665
Hans and Zacharias Janssen created the microscope in the 1590 so that later scientists can use to discover cells.
Anton van Leeuwenhoek showed in 1680 that all living organisms are composed of one or more cell
In 1838 Matthias Schleiden showed how plants are composed of one or more cells
Matthias Schleiden shows in 1838 how plants are composed of one or more cells
In 1800 Theodor Schwann demonstrated that the cell is the basis of animal as well as of plant tissue
Rudolph Virchow Demonstrated that cell theory applied to diseased tissue as well as healthy. He summarized the cell theory “with all cells arise from cell” in 1855.
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