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What are Hans and Zacharias Janssen famous for and how did their invention help in the development of the present day cell theory?
Wiki User
∙ 12y ago
Hans and Zacharias Janssen are famous for making the first "simple" microscope which helped to discover cells and that everything is made up of living cells etc.
They help us understand the cell structures of a living thing.
Wiki User
∙ 12y ago
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