| Name: | Kupffer's vesicle |
|---|---|
| Synonyms: | ciliated organ of asymmetry |
| Definition: | Small but distinctive epithelial sac containing fluid, located midventrally posterior to the yolk cell or its extension, and transiently present during most of the segmentation period. Kupffer's vesicle has been compared to the mouse embryonic node. |
| Ontology: | Anatomy Ontology [ZFA:0000001] |
| Name: | lumen |
|---|---|
| Synonyms: | |
| Definition: | Anatomical space within a tubular organ, duct, or vessel. |
| Ontology: | Anatomy Ontology [ZFA:0005930] |