NucleusPlusRER250.jpg (27808 bytes)
Rough ER in sectional view. The small dark structures are Ribosomes. Protein synthesis occurs on Rough ER.
Endoplasmic Reticulum Link-->

 SmothERPMWal250jpg.jpg (26596 bytes)
Smooth Endoplasmic Reticulum (ER) - Smooth ER is involved in Lipid Metabolism and synthesis of Membrane Proteins.

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