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Hans and Zacharias Janssen ivent the first compond microscope
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Robert Hooke was the first person to use the term cells when decribing the small ""rooms" he saw when looking at a cork with a microscope.
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In 1673 Anthon van Leeuwenhoek looked at living objects (including teeth gunk) with his new more powerfull microscope and saw living cells and bacteria
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In 1804 J.H.F Link and Karl Rudolphi dicovered that cells had there own walls and not common walls.
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Matthias Schleiden a botanist, noted that all the plants he had ever looked at were made of cells.
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In 1839 Theodore Schwann dicovered that all animals are made of cells and said that cells are the basic unit of all living things.
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In 1852 Robert Reamck published oberservations about cell division. he also said that bianry fission is how animal cells are created (he was also thought to be th orginal author of Rudolfm Virchow's theory that all cells must come from living cells).
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In 1855 Rudolf Vichow said that all cells must come from living cells (although many thought he copied it from Robert Remack).
