The Development of the Microscope and Cell Theory By johnzach Jan 1, 1665 Robert Hooke uses the term ‘cell’ to describe the tiny box-like units in a thin slice of cork Jan 1, 1675 Antonie van Leeuwenhoek discovers unicellular microscopic organisms Jan 1, 1824 Rene’ Dutrochet states that all plants and animals are made up of cells Jan 1, 1839 Theodor Schwann suggests that all animals are made of one or more cells and the cell is the basic unit of structure for all living things Jun 1, 1858 Rudolf Virchow suggests that all cells arise from cells that already exist Jan 1, 1933 Ernst Ruska builds the first electron microscope Jul 10, 1953 Frits Zernike wins Nobel Prize for investing the phase contrast microscope
