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Hans and Zacharias Janssen
Hans and Zacharias Jensen created the first compound microscope. -
Robert Hooke
Robert Hooke examined a slice of cork through a compound microscope and discovered that it had tiny roomlike structures. He was reminded of the rooms the monks live in and decided to call the structures cells. -
Anton van Leeuwenhoek
Anton van Leeuwenhoek looked at blood, rain water, and teeth scrapings. He observed living cells and he then called them "animalcules". The name was later changed to bacteria. -
Matthias Schleiden
He studied botany and discovered that all plants are made of cells. -
Theodor Schwann
A zoologist that studied animals under a microscope and concluded that animal parts are composed of cells. -
Rudolph Virchow
German physcian that said all living cells come from other living cells.
