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Resources
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Pricing
1590 - 1599
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Zacharias Janssen invented the telescope
1665 - 1666
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Robert Hooke discovered plant cells
1670 - 1671
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Anton Leeuwenhoek was the first ever to observe a single celled organism through a microscope
1838 - 1839
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Matthias Schleiden declared that the cell is the basic building block of all plant matter
1839 - 1840
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Theodore Schwann developed cell theory
1855 - 1856
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Rudolph Virchow proved cell theory applied to diseased tissue