Cell Stuff By cajk24 Jan 28, 1665 Robert Hooke Discovered Cells with microscope Sep 28, 1674 Anton Van Leeunwenhoek tiny living organisms in pond water, through a microscope Sep 28, 1838 Matthias Schleiden Concluded that all plants are made of "cells" Sep 28, 1839 Theodor Schwann animals are made of cells Sep 28, 1855 Rudolph Virchow new cells division