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ZIRC
Term: osteoblast rough endoplasmic reticulum
Note: This page represents a term created by the combination ("post-composition") of two ontology terms. For more information on the individual terms, click the hyperlinked name.
Name: osteoblast
Synonyms: osteoblasts
Definition: A bone-forming cell which secretes an extracellular matrix. Hydroxyapatite crystals are then deposited into the matrix to form bone.
Ontology: Anatomy Ontology [ZFA:0009031]
Name: rough endoplasmic reticulum
Synonyms: RER, rough ER
Definition: The rough (or granular) endoplasmic reticulum (ER) has ribosomes adhering to the outer surface; the ribosomes are the site of translation of the mRNA for those proteins which are either to be retained within the cisternae (ER-resident proteins), the proteins of the lysosomes, or the proteins destined for export from the cell. Glycoproteins undergo their initial glycosylation within the cisternae.
Ontology: GO: Cellular Component [GO:0005791]   QuickGO   AmiGO