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Endoplasmic Reticulum
Image credit: NIH, National Human Genome Institute (Darryl Leja)
The Endoplasmic Reticulum (ER) carries proteins and other materials from one part of the cell to another. It is attached to the outside of the nucleus.
Smooth Endoplasmic Reticulum does not have ribosomes while Rough endoplasmic Reticulum has ribosomes.
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