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Aristotle discovers "philosophy" and "Philosopher"
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Jan Baptist Van Helmont discovers the term "gas." and the founder of pneumatic chemisty
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Zacharias Janssen- first invention of the compound microscope.
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Robert Hooke discoverd pores, and cells
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Antonie Philips Van Leeuwenhoek discovers bacteria and protists.
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Robert Brown discovers the cell nucleus and cytoplasm streaming.
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Lorenz Oken discovers Naturphilosophie.
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Matthias Scheiden dicovers that all plants are made up of cells. He also discovered the impotance of the cell nucleus.
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Albert Von Roelliker helped the cell theory by studying animals.
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Theodore Schwann dicovers the term "digestive enzyme" and the first cell theory.
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Louis Pasteur discovers the "germ theory."
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Rudolph Virchhow dicovers that all cells are made up of existing cells cells divide to form new ones.