Cell Theory

  • Robert Hooke

    Published "Micrographia".
  • Antoni van Leeuwenhoek

    Discovered bacteria and protozoa.
  • Matthias Schleiden

    Discovered all plant tissues are made of cells.
  • Theodor Schwann

    Published "Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals"
  • Rudolf Virchow

    Proposed that all living cells must rise from pre-existing cells.