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Hans and Janssen create first compound microscope.
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Hooke built a microscope which he used to observe the cell walls of a cork, he stated that the cell walls looked a lot like cells, like jail cells that we know today. he named these amazing things cells after what he thought they looked like.
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Van Leeuwenhoek observed the first living cells in pond water with lens he created for his microscope.
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Brown finds the nucleus of a plant cell and states its importance in cell creation.
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Schleiden states that all plant tissues are made of cells.
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Schwann corrects Schledien on his statment, Schwann says that not only are plant tissues made of cells but so are animal tissue, he also says that cells are the basic unit for all organisms.
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Braun restates the second part of the cell theory stating that cells are the basic unit of life.
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Virchow adds the third part of the cell theory stating that cells only come from other living cells.