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rough endoplasmic reticulum
This term refers to a specialized organelle within eukaryotic cells. The adjective "rough" specifically denotes the granular appearance caused by ribosomes adhering to the membrane, distinguishing it from the "smooth endoplasmic reticulum," which lacks these ribosomes and performs different functions such as lipid synthesis.
In scientific literature, this term is frequently abbreviated as RER. Because it describes a specific biological structure, it is used almost exclusively in academic, medical, and biological contexts.
Meanings
A network of membranous tubules and sacs within a eukaryotic cell, characterized by the presence of ribosomes attached to its outer surface, which facilitates the synthesis and folding of proteins.
The rough endoplasmic reticulum is primarily responsible for producing proteins that are destined for secretion or membrane insertion.