Cell Theory Timeline

Events

Hans and Zacharias Janssen

Approx. 1601

First compound microscope made

Robert Hooke

1665

Gave the name of cells

Anton van Leeuwenhoek

1675

Discovered single-celled organisms

Matthias Schleiden

1838

Discovered all plants are made of cells

Theodor Schwann

1839

Discovered all animals are made from cells

Rudolph Virchow

1855

Discovered that all cells are made from other pre-existing cells