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8,000 BC Biotechnology begins, as humans begin choosing or altering plants and livestock so they can be domesticated. Potatoes become the first cultivated food. Egyptians master the art of winemaking. 4,000 BC Egyptians and Sumerians learn brewing, cheese and bread making. In China, moldy soybean curds become the first antibiotic to treat infections and ailments. 2,000 BC . 300 BC 1590 1663 500 BC Dutch spectacle- maker Zacharias Janssen invents the microscope. English physicist, mathematician and inventor Robert Hooke discovers the existence of the cell. Greeks develop grafting techniques for plant breeding. 1796 English surgeon Edward Jenner discovers the process of vaccination by inoculating with cowpox a small boy who became immune to smallpox. This is how the word 'Vaccine', from the Latin 'Vacca' for cow, came into use. 1833 French chemist Anselme Payen discovers and isolates diastase, the first enzyme. 1838 Swedish chemist Jöns Jakob Berzelius discovers proteins. 1839-1855 Prussian physician Rudolf Virchow declares: