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On an unknown date in 1595, two brothers Hans and Zacharias Janssen developed the first compound microscope. Janssen's microscope was made of of three tubes with lenses inserted into the ends of the other tubes.
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Robert Hooke, in 1665, date unknown, dicoverd a small dot found inside a piece of cork with the trending microscope. . He decided to call it a cell.
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In 1678, Van Leewenhoek made the mircoscope even better, he used polished lenses, which made the objet way more magnified.
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Anton Van Leewenhoek, mith his new modified mircoscope, took the science world a whole level further in the iscovery of cells. Anton studied animals within his microscope, finding the same cells that his fellow scientists discoved. He saw ring living things under his microscope.
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On a date unknown in 1683, Anton van Leewnhoek discoved a thing called bacteria, this happened because he was studying the the bacteria on his teeth.
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In 1838, a German scientist named Mathias Schleiden discoverd all plants had cells in them too.
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Theodor Schwann studied animals under his microscope and found that all animals are made up of cells.
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After some contriversy on who stated this idea, Rudolph Virchow was credited that all living things come from other living things. Some people thought this idea was crazy, but he was correct.