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Light Microscope History challenge

This challenge matches people with their accomplishments as "firsts" that advanced our knowledge through use of the microscope.

AB
1674 van Leeuwenhoekmicroorganisms with a 1 lens microscope
1590 Jannsenmade the first microscope with 2 lenses in a tube
1021 Alhazenmagnifying glass described
1284 D'Armatewearable reading glasses
1665 Hookecells described
1830 Listercompound microscope
1850's Spencerimproved magnification to 1250X, 5000X with blue light
1873 Leitzrevolving nose-piece
1661 Malpighidescribed microscopic structure of organ tissues
1879 Flemmingdiscovered mitosis
1880-1890 Koch and Pasteurinvestigate bacteria and disease
1883 Browndescribes the nucleus
1838 Schleidenplants are made of cells
1839 Schwannanimals are made of cells
1855 Virchowcells come from other cells
1898 Golgidescribed Golgi apparatus
1835 Dujardindiscovery of cytoplasm