Cell Theory

Zacharias Janssen

Sep 21, 1590

Zacharias Janssen helped contribute to the cell theory because he invented the Microscope. Picture and info: "Hans and Zacharias Jansen: A Complete Microscope History." Hans and Zacharias Jansen. N.p., n.d. Web. 21 Sept. 2015.

Robert Hooke

Sep 21, 1663

Robert Hooke helped contribute to this Cell Theory because he is the one who discovered the cell. Picture and info: "Microscope History: Robert Hooke (1635 - 1703)." Robert Hooke's Microscope Discoveries. N.p., n.d. Web. 21 Sept. 2015.

Anton Van Leeuwenhoek

Sep 21, 1674

Anton Van Leeuwenhoek helped contribute to this cell theory because he helped with the microscope lenses to make them more clearer. Picture and info: "Anton Van Leeuwenhoek: A History of the Compound Microscope." Anton Van Leeuwenhoek. N.p., n.d. Web. 21 Sept. 2015.

Theodor Schwann

Sep 21, 1837

Theordor Schwann helped contribute to the cell theory because he discovered that "All plants are composed of cells." "Theodor Schwann Theorizes That All Living Things Are Made of Cells." Theodor Schwann Theorizes That All Living Things Are Made of Cells. N.p., n.d. Web. 21 Sept. 2015.

Matthias Schleiden

Sep 21, 1839

Matthias Schleiden contributed to the cell theory because he stated that "Different parts of the plants organisms are composed of cells." Picture and info: "Matthias Schleiden (1804-1881)." Matthias Schleiden (1804-1881). N.p., n.d. Web. 21 Sept. 2015.

Rudolph Virchow

Sep 21, 1855

Rudolph Virchow helped contribue to the cell thoery because he states that "All cells come from pre-existing cells." Picture and info: "Rudolf Virchow." Wikipedia. Wikimedia Foundation, n.d. Web. 21 Sept. 2015.