| Name: | blood island |
|---|---|
| Synonyms: | blood islands, caudal hematopoietic tissue, posterior blood island, posterior ICM |
| Definition: | Nests of developing blood cells arising late in the segmentation period from the intermediate mass, and located in the anterior-ventral tail, just posterior to the yolk extension. |
| Ontology: | Anatomy Ontology [ZFA:0000094] |
| Name: | aplastic |
|---|---|
| Synonyms: | aplasia, undeveloped |
| Definition: | Absence of an organ, tissue or cell due to failure to develop from a primordium or precursor cell. |
| Ontology: | Phenotypic Quality Ontology [PATO:0001483] |