-
Hans and Zacharias Janssen
Invented the compound optical microscope -
Robert Hooke
Became the first paid scientist -
Robert Hooke
Discovered the cell through experiments and use of microscopy (using a microscope) -
Anton Van Leeuwenhoek
Learned how to grind lenses and made simple (practical) hand-held microscopes -
Anton Van Leeuwenhoek
Anton Van Leeuwenhoek was the first to see and describe bacteria -
Theodor Schwann
Discovered the enzyme Pepsin -
Theodor Schwann
Through a variety of fermentation experiments, Schwann identified the role of microorganisms in putrefaction and alcohol fermentation -
Theodor Schwann
Used experiments to prove the theory of spontaneous generation incorrect -
Matthias Schleiden
Contributed to the cell theory by reporting in 1838 that plant tissues are constructed from individual cells -
Matthias Schleiden
Made observations on protoplasmic streaming and his study of mycorrhizae -
Theodor Schwann
Wrote a book about the cellular structure of plants and animals and the development of adult cells. It proposed the cell doctrine or cell theory – that all living things are made of cells -
Matthias Schleiden
Wrote the first textbook to include a discussion of plant cytology -
Rudolph Virchow
Proved the cell theory showing all cells come from other cells proving non-living things can't produce living ones -
Rudolph Virchow
Observed diseased cells come from other cells
