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| Hans and Zacharias Janssen |
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| Dutch lens grinders, father and son. Produced first compound microscope(2 lenses). |
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| English scientist. looked at thin slice of cork ()oak cork) through a compound microscope. observed tiny, hollow, room like structures. called these structures "cells" because they reminded him of the rooms that monks lived in. only saw the outer walls (cell walls) because cork cells are not alive. |
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| looked at blood, rainwater, scrapings from teeth throgh a simple microscope and a drop of pond water (1 lens). he observed the first living cells; He called the "animalcules". some of the small "animalcules" are now called bacteria. |
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| German botanist. viewed plant parts under a microscope. discovered that plants are made of cells. |
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| German zoologist. viewed animal parts under a microscope. discovered that animal parts are made of cells. |
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| German physician. stated that all living cells come only from other living cells. |
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