Cell theory

Hans and Zacharias Jansen

1590

Hans and Zacharias Jansen contributed to the cell theory by inventing the compound microscope in 1590.

Robert Hooke

1665

Robert Hooke contributed to the cell theory by looking through the compound microscope and discovering cells.

Anton Van Leeuwenhoek

1683

Anton Van Leeuwenhoek contributed to the cell theory by scraping some tartar off his teeth, looked at it under a microscope, and found living organisms. He was the first to examine many cells.

Matthias Jakob Schleiden

1838

Matthias Jakob Schleiden contributed to the cell theory by dicovering that all plants are made of cells.

Theodor Schwann

1839

Theodor Schwann contributed to the cell theory by discovering that all living things and all tissues are of cells.

Rudolf Virchow

1855

Rudolf Virchow contributed to the cell theory by publishing the book omnis cellula e cellula in: 1855. Omnis cellula e cellular means "All cells come from cells"