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Hans and Zacharias Jansen contributed to the cell theory by inventing the compound microscope in 1590. -
Robert Hooke contributed to the cell theory by looking through the compound microscope and discovering cells. -
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 contributed to the cell theory by dicovering that all plants are made of cells. -
Theodor Schwann contributed to the cell theory by discovering that all living things and all tissues are of cells. -
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"
