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Hans and Zacharias Janssen
Dutch lens grinders, father and son
produced first compound microscope (2 lenses) -
Robert Hooke
English scientist
looked at a thin slice of cork (oak cork) through a compound microscope
observed tiny, hollow, roomlike 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 -
Anton van Leeuwenhoek
Dutch fabric merchant and amateur scientist
looked at blood, rainwater, scrapings from teeth through a simple microscope (1 lens)
observed living cells; called some 'animalcules'
some of the small 'animalcules' are now called bacteria -
Matthias Schleiden
German botanist
viewed plant parts under a microscope
discovered that plant parts are made of cells -
Rudolph Virchow
German physician
stated that all living cells come only from other living cells -
Theodor Schwann
German zoologist
viewed animal parts under a microscope
discovered that animal parts are made of cel
