DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Golgi apparatus, stacks of cisternae, and vesicles near the nucleus of a nerve cell, coloured transmission electron micrograph (TEM). The nuclear membrane has pores in it. The Golgi apparatus is a cell organelle in all plant and animal cells. The apparatus consists of flattened membrane bound sacs located close to the endoplasmic reticulum. The Golgi apparatus receives proteins and lipids (fats) from the rough endoplasmic reticulum. It modifies some of them and sorts, concentrates and packs them into sealed droplets called vesicles. Depending on the contents these are despatched to one of three destinations: within the cell to lysosomes; to the cell plasma membrane; outside the cell. Magnification: x9,500 when shortest axis printed at 25 millimetres.
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