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Hans and Zacharias Jenson make the first coundpound microscope
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Anton van Leeuwenhoek saw living cells and bacteria with his new microscope
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Matthias Schleiden says all plants are made of cells
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Theodor Schwann says all animals are made of cells and cells are the basic unit of life.
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Rudolf Virchow says cells use cell division to reproduce
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.