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zacharius jansen invents the coumpound microscope
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robert hook discovered cells
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anton von leewenhoek dicovers unicellular orgonizms
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mattius scheidenj realizes all plants are made of cells
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theodore schwann realizes animals are made of cells
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roudolf virchow proposes that cells come from other cells
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ernst abbe and carl zeiss invent modern day compound teliscope
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scaning electron microscope is invented
