Discovery of the cell

• Zacharias Jansen invented one of the microscope’s first prototypes.
• Robert Hooke reported some first clear drawings of the plant cells he had observed in thin cells of cork.
• Anton van Leeuwenhoek reported his discovery of blood cells, sperm cells, and a lively world of “animalcules” which were later found to be bacteria and protozoans.
• Lorenz Oken suggested that all organisms originate from and consist of cells
• Robert Brown Discovered the nucleus as a part of the plant cell and nuclei in some animal cells
• Felix Dujaridin recognized the living substance within the cell which he termed as sarcode, and was later changed to protoplasm.
• Mathias Schleiden concluded cells are the elementary particles of plants
• Theodre Schwann concluded cells are the elementary particles of animals
• Rudolf Virchow discovered that cells are formed from a preexisting cell and that cells are the basic unit of life
• Modern Cell theory include:

  1. all organisms are composed of one or more cells.
  2. Cells are the basic unit of organization of all organisms.
  3. Cells arise only by division of previously existing cells.