name: endoplasmic reticulum
Description: The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
|GO:0005790||smooth endoplasmic reticulum|
|GO:0005791||rough endoplasmic reticulum|
|GO:0009511||plasmodesmatal endoplasmic reticulum|
|GO:0043231||intracellular membrane-bounded organelle|