| Term: | osteoblast rough endoplasmic reticulum |
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| 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 |
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| 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 |
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| 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 |