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Zacharias Janssen combined two convex lenses to make a microscope.
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Robert Hooke, and English Scientit discovers honeycomb shaped objects under a primitive microscope. He then coined the term "cell"
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Anton looks into a pond with a microscope and discovers living cells. Within the next ten-twenty years he also dicovered the first bacteria and drew detailed images of some things he saw.
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Matthias Schleiden discovers plants are also made of cells.
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Schwann devloped his cell theory that not only plants, but all living things are composed of one or more cells.
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Rudolph Virchow develops the theory that al living things come from other living things.
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The three accepted parts of modern cell theory are: all known living things are made up of one or more cells. All living cells come from pre-existing cells by dividing. The cell is the fundamental unit of function in all living things.
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Cell Theory (HARRIS FAMILY) http://www.cpschools.com/schools/osm/theory.htm Cell Theory Timeline (Cell Theory Timeline) http://www.softschools.com/timelines/cell_theory_timeline/96/