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Anton Van Leeuwenhoek observes unicellular organisms after creating his own microscope. He discovered Bacteria and called them animalcules.
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Robert Hooke first observes the cell. He created the word cell as he thought the cells looked like the cells that the monasteries used to sleep in.
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Mattius Schleiden realises all plants are made of cells. He was a botanist who thought that every single one of them that he looked at had cells
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Around the same time as Mattius Schleiden, Theodore Schwann realised that all the animals he had ever taken a look at were made of cells
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Rudolf Virchow proposes that all cells come from other cells. This information was "borrowed without permission" from another scientist.
