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Hans and Zacharias Janssen
They invented the first compound microscope using two convex lenses and a tube. -
Robert Hooke (cork)
Robert discovered a honey comb like structure in a cork slice using a primitive compound microscope. The only thing he could see was cell walls. The cell walls were dead tissue though. -
Anton Van Leeuwenhoek
He was the first to see, discover, and draw bacteria. -
Matthias Schleiden
He created what is known today as the, "Cell Theory." -
Theodore Schwann
He said that all organisms are composed of cells. Him and Matthias basically made up the theory of life. -
Rudolph Virchow
Rudolph published, "every cell stems from another cell." He also stated that all diseases start in a normal cell. -
Rudolph Virchow
Adds the third part of the cell theory