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  Produced the first compound microscope by combining two convex lenses within a tube.
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  Discovered the cellular composition of cork and introduced the word cell to science.
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  Polished lences of microscopes causing them to have better magnification.
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  CitationHe discovered 'animacules".
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  He took a sample from his mouth and found bacteria in his saliva.
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  Discovered that animals where made up of cells.
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  Sated that all living things come from other living things.
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  He discovered that plants where made out of cells.
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  All living organisms are composed of one or more cells, the cell is the basic unit of the organization of living things, and all cells come from pre-existing cells.