| Name: | midbrain hindbrain boundary |
|---|---|
| Synonyms: | isthmus, mhb, midbrain-hindbrain boundary |
| Definition: | The boundary between the mesencephalon and the rhombencephalon. |
| Ontology: | Anatomy Ontology [ZFA:0000042] |
| 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] |