| Name: | posterior caudal vein |
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| Synonyms: | |
| Definition: | |
| Ontology: | Anatomy Ontology [ZFA:0001063] |
| Name: | anatomical region |
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| 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] |