Contributions to Cell theory

Events

Zacharias Janssen

1590

Invented the first compound microscope.

Robert Hooke

1665

Discovered the cell.

Anton van Leeuwenhoek

1673

Invented another microscope.

Matthias Schleiden

1838

Stated that all the different plant organisms are made of cells.

Theodor Schwann

1839

Stated that all animals were made of cells.

Rudolph Virchow

1858

Said all cells come from pre-existing cells