In 1897, scientist Gorniar observed the lattice-like structure in cells with the help of a light microscope and named them argestoplasm. In 1945, scientist Keith R. Porter and his colleagues Albert Claude and Ernest F. Fullam first discovered it from liver cells. Endoplasmic reticulum was named by scientist Keith R. Porter in 1953. In 1969, scientists Porter, Claude and Fullam described the detailed structure of endoplasmic reticulum from liver cells.