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Robert Hooke
In 1665, Robert Hooke discovered what would soon be called the plant cells in thin slices of cork using a newly invented compound microscope. Published in "Micrographia", Hooke compared the rigid structure of the cork cells to deep rooms monks resided in called "cella". Because he had no knowledge of the structure or components of cells, Robert Hooke's theory soon became outdated with Leeuwenhoek's discoveries of cells in many organisms. -
Antonie van Leeuwenhoek
In addition to creating simple microscopes, Leeuwenhoek discovered blood cells, microscopic animals, and animal sperm. Using advanced magnification, the scientist detected life in lake water and developed theories on the origin of life from the egg cell Hooke later confirmed Brown's discovery of the nucleus provided a more detailed view to the cell. Waggoner, Ben. "Antony Van Leeuwenhoek (1632-1723)." Antony Van Leeuwenhoek. Regents of the University of California, 8 Aug. 96. Web. 03 Oct. 2016. -
Robert Brown
By studying pollen harvested from orchids, Robert Brown determined all plants are made of cells. In addition, Brown coined the term "nucleus" when discovered in 1831 and the "Brownian movement", the constant movement of particles in fluid. However, Schwann's revolutionary theory encompassing all living things soon outdated Brown's contribution. "Brown, Robert." Complete Dictionary of Scientific Biography. . Encyclopedia.com. 5 Oct. 2016 http://www.encyclopedia.com. -
Theodor Schwann
Alongside Schleiden, Theodor Schwann is considered the founder of cell theory.He verified the existence of cells and traced matured tissues from embryo stages.Schwann contributed 3 generalizations on relationships of cells to animal tissue. By studying various tissues and sharing discoveries with Schleiden, he improved the cell theory greatly though had no info on plants. "Brown, Robert." Complete Dictionary of Scientific Biography. . Encyclopedia.com. 5 Oct. 2016 http://www.encyclopedia.com. -
Matthias Schleiden
Matthias Schleiden emphasized that plants are created from cells and cell structures.In addition,he joined forces with Schwann to expand on the cell theory involving plant composition.By studying plant tissues under a microscope,he made a generalization that all plants must include cells/grow from a single cell.Schleiden progressed the cell theory in plants. "Schleiden, Matthias Jacob." Complete Dictionary of Scientific Biography. . Encyclopedia.com. 6 Oct. 2016 http://www.encyclopedia.com. -
Virchow Rudolf
While Schwann insisted cells were made from blastema, Virchow introduced the ground-breaking development that cells are created through the splitting of other cells. Through the study of diseased and healthy tissue, he discovered this cornerstone of the cell theory. Because his claims were more legitimate with proof, Virchow's contribution was widely accepted.
"Virchow, Rudolf Carl." Complete Dictionary of Scientific Biography. . Encyclopedia.com. 5 Oct. 2016 http://www.encyclopedia.com.
