The History of the Cell Theory

Events

Zacharias Janssen

1585 - 1632

Dutch spectacle maker from Middelburg credited with inventing the first microscope. So many scholars believe that his father, Hans, must have played an important role in the creation of the microscope. Similarly, Zacharias Jansen is also sometimes credited with the invention of the first telescope.

Anton Van Leeuwenhoek

1632 - 1723

Is a scientist who saw cells after Hook did. He made lenses that could magnify objects 300 or 270x. He named animalcules they contain of protozoa and other unicellular organisms, like bacteria.

Robert Hooke*

1635 - 1703

Robert Hooke FRS was an English natural philosopher, architect and polymath. He discovered a honeycomb like substance in a cork slice using a microscope. He only saw cell walls because it was dead tissue. He continued to call them cells.

Matthias Schleiden**

1804 - 1881

The co-founder of the cell theory. He also recognized the important of the cell nucleus, discovered in 1831 by the Scottish botanist Robert Brown, and connected with cell division.

Theodor Schann

1810 - 1882

stated that plant tissues were composed of cells. Schwann demonstrated the same fact for animal tissues, and in 1839 concluded that all tissues are made up of cells.

Robert Remak

1815 - 1865

He is best known for reducing Karl Ernst von Baer's four germ layers to three: the ectoderm, mesoderm, and endoderm. He also discovered unmyelinated nerve fibres and the nerve cells in the heart sometimes called Remak's ganglia. Remak discovered that the origin of cells was by the pre existing cells

Rudolph Virchow

1821 - 1902

He's mostly known for his Cell Theory, witch built on the work of Theodor Schwann. He was one of the first to accept the work of Robert Remak, who showed cells of pre existing cells.