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Hans and Zacharias Janssen
- Dutch lens grinders, father and son -produced first compound microscope
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Robert Hooke
- English Scientists
- looked at a thin slice of cork (oak cork) through a compound microscope -observed tiny, hollow, roomlike structures -called them cells because they looked likethe cells of monks
- oniy saw the outer walls because cork cells aren't alive
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Anton van Leeuwenhoek
- Dutch fabric merchant and ameteur scientist
- looked at blood, rainwater, scrapings through a simple microscope (1 lens)
- observed living cells; called some 'animalcules'
- some of the small 'animalcules' are now called bacteria
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Matthias Schlieden
- German Botanist
- viewed plant parts under a microscope
- discovered that plant parts are made of cells
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Theodore Schwann
- German Zoologist
- viewed animal parts under a microscope
- discovered animals are made of cells
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Rudolph Virchow
- German Physician
- stated that all living cells come only from other living cells
