Golgi apparatus was first discovered by Camillo Golgi (in 1889 ). It is a complex protoplasmic structure madeup of many flat, disc-shaped sacs or cisternae (0.5−1.0µm) in diameter) surrounded by vesicles. Cisternate of Golgi apparatus are found to be stacked parallel to each other. They vary in number in a cell. They are often curved like shallow bowls to give Golgi complex a definite polarity. They are concentrically arranged near the nucleus with two distance faces(i) Cis face (forming face) This is convex in shape and lies towards the cell membrane. (ii) Trans face (maturing face) This is concave in shape and lies towards the nucleus.