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Zacharias Jansen and his father Hans invent the first compound microscope in around 1595.
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Robert Hooke, a British scientist, discovers cells using a microscope. He called them cells because they reminded him of the cells that monks lived in. -
Anton van Leewenhoek, a Dutch scientist, uses his own microscope to see cells and bacteria. -
Matthias Schleiden, a botanist, uses a microscope to look at plants. He then confirms that all plants are made of cells. -
Schleiden, who researched plant cells, worked together with Schwann, who researched animal cells, to create the Classical Cell Theory.
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Theodor Schwann studied animal cells and concluded that all animals must be made of cells. -
When Schleiden and Schwann were creating the second part of the cell theory, they argued over if cells came from preexisting cells, or if cells spontaneously appeared.
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After Virchow proposed his theory, Remak claims that the information was his, sparking a conflict. -
Rudolf Virchow, a German, proposes Omnis cellula e cellula, which means all cells come from other cells.
