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the microscope is invented by father and son lens grinders, Hans and Zacharias Janssen
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English scientist Robert Hooke discovers something by looking at cork under a microscope. He names them "cells"
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Ametuer scientist Anton Van Lueenhoeke discovers bacteria on teeth scrapings. He calls them "animalcules".
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Botanist Matthias Schleiden realizes all plants are made of cells.
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Zoologist Theodor Schwann realizes all animals are made of cells.
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German Physician Rudolph Verchow proves cells are formed by other cells.