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Produced first compound microscope by combining two convex lenses with a tube
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Published Micrographia
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learned to grind lenses
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Observes lake water for small living things
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Confirmed Leeuwenhoeks finding of small animals
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observes the plague on his own teeth
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describes protists
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descovered pepsin, a digestive enzyme
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Discovered that plants were made up of cells
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confirms the structures of plants and animals
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stated that all living thins come from other living things