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Graphical

Endoplasmic reticulum lumenEndoplasmic reticulum

Definition

The lumen of the endoplasmic reticulum (ER) is the area enclosed by the endoplasmic reticulum membrane, an extensive network of membrane tubules, vesicles and flattened cisternae (sac-like structures) found throughout the eukaryotic cell, especially those responsible for the production of hormones and other secretory products.

Category

› Cellular component

GOi

endoplasmic reticulum lumen [ GO:0005788 ]

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