| 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: | endoplasmic reticulum lumen |
|---|---|
| Synonyms: | cisternal lumen, endoplasmic reticulum cisterna, ER cisterna, ER lumen |
| Definition: | The volume enclosed by the membranes of the endoplasmic reticulum. |
| Ontology: | GO: Cellular Component [GO:0005788] QuickGO AmiGO |