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Hooke publishes his book, Micrographia, which contains his drawings of sections of cork as seen through one of the first microscopes.
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He observes ting living organisms in drops of pond water thourgh his simple microscope.
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He concluded that all plants are made up of cells.
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He concludes that all animals are made up of cells.
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He proposes that all cells come from existing cells, completing the cell theory.
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She proposes the ideas that certain organelles, tiny structures within some cells, were once free-living cells themselves.
