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Cell Theory timeline
11 months ago
11 months ago
Hans and Zacharias Janssen were known for inventing the compound optical microscope. This contributed to the cell theory by making it easier and more practical to observe cells.
Robert Hooke, an English scientist, discovered a honeycomb-like structure in a cork slice using a primitive compound microscope. He only saw cell walls as this was dead tissue. He coined the term "cell" for these individual compartments he saw.
Anton van Leeuwenhoek, a Dutch biologist, looks at pond water with a microscope he made lenses for.
Robert Brown, an English botanist, discovered the nucleus in plant cells.
Matthias Jakob Schleiden, a German botanist, proposes that all plant tissues are composed of cells, and that cells are the basic building blocks of all plants. This statement was the first generalized statement about cells.
Theodor Schwann, a German botanist reached the conclusion that not only plants, but animal tissue as well is composed of cells. This ended debates that plants and animals were fundamentally different in structure. He also pulled together and organized previous statement on cells into one theory.
Rudolf Virchow, a German physiologist/physician/pathologist added the 3rd part to the cell theory, he was also the first to propose that diseased cells come from healthy cells.
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