| Name: | axis |
|---|---|
| Synonyms: | midline |
| Definition: | Organism subdivision running along the rostral-caudal axis of the early embryo. |
| Ontology: | Anatomy Ontology [ZFA:0000092] |
| Name: | anatomical region |
|---|---|
| Synonyms: | |
| Definition: | A 3D region in space without well-defined compartmental boundaries; for example, the dorsal region of an ectoderm. |
| Ontology: | Spatial Ontology [BSPO:0000070] |