Cell Theory

  • Hans and Zacharias Janssen

    Hans and Zacharias Janssen
    Zacharias was an inventor, Hans was his father and they both contributed to the invention of the compound optical microscope
  • Robert Hooke

    Robert Hooke
    A philosopher and architect who discovered existence of cells
  • Francesco Redi

    Francesco Redi
    A physician and poet who performed experiments that disproved spontaneous generation
  • Anton van Leeuwenhoek

    Anton van Leeuwenhoek
    A businessman who was first to view organisms in microscope
  • Lorenz Oken

    Lorenz Oken
    A naturalist and botanist who proposed a different theory about cells which helped to spread the theory
  • Henri Dutrochet

    Henri Dutrochet
    A physician and botanist who stated that cells were the building blocks of life
  • Johannes Purkinje

    Johannes Purkinje
    A monk who discovered embryos and ovas in chickens.
  • Barthelemy Dumortier

    Barthelemy Dumortier
    A botanist and politician who was first to observe reproduction of cells by cell division in plants
  • Robert Brown

    Robert Brown
    A botanist who observed the radical motion of molecules and named the nucleus.
  • Felix Dujardin

    Felix Dujardin
    A biologist who was first to group single-celled organisms and stated that cells were not hollow but filled with jelly
  • Matthias Schleiden

    Matthias Schleiden
    A botanist who concluded that all plants were made of cells, co-founder of cell theory
  • Theodor Schwann

    Theodor Schwann
    A physician who concluded all animals were made of cells, co-founder of cell theory
  • Louis Pasteur

    Louis Pasteur
    A biologist and chemist who disproved spontaneous generation
  • Rudolf Virchow

    Rudolf Virchow
    A physician and pathologist who was first to observe cell division, reasoned all cells come from pre-existing ones
  • Max Schultz

    Max Schultz
    A university professor who defined cell as a mass of protoplasm with a nucleus.
  • Walther Flemming

    Walther Flemming
    A physician who discovered chromosomes and created mitosis
  • Edmund Wilson

    Edmund Wilson
    A zoologist and geneticist who discovered relationship between hereditary traits and cells