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Hans and Zacharias Jansenn
They produced the first compound microscope which greatly contributed to the cell theory by making it easier and more practical to observe cells. -
Robert Hooke
In 1665, Robert Hooke discovered cells through a refined microscope which he made. -
Anton van Leeuwenhoek
He has significantly contributed to the cell theory by being the first scientist to closely observe cells under a microscope, paving the way for understanding of modern biology. He actually gave cells their name after the resemblance he believed they had to a monk's quarters. -
Matthias Schleiden
Matthias Schleiden contributed to the cell theory by concluding that all plant tissues are composed of cells. He also stated that the cell is the basic building block of all matter. -
Theodor Schwann
Theodor Schwann concluded that all tissues, plant and animal, are made up of cells, by demonstrating what Matthias Schleiden found a year earlier. This laid the foundation of the cell theory. He also worked on fermentation and discovered the enzyme pepsin. -
Rudolph Virchow
Virchow was the first to state that all living cells come from other living cells.
