HELENE FOURNIE, ISM / SCIENCE PHOTO LIBRARY HELENE FOURNIE, ISM / SCIENCE PHOTO LIBRARY
Animal cell structure. Illustration of the internal structure of an animal cell. Inside the cell (encased in the cell membrane), the cellular structures (organelles) include the Golgi apparatus, the rough endoplasmic reticulum (green and blue), mitochondria (purple), the cell nucleus (blue, upper right), various cytoskeleton elements (centriole cylinders, red), and internal transport vesicles and vacuoles (pink spheres). The cell nucleus has been dissected to show the nuclear envelope and nuclear pores.
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