| Name: | atrioventricular ring |
|---|---|
| Synonyms: | AV ring |
| Definition: | A ring of conduction tissue that forms in the atrioventricular canal. |
| Ontology: | Anatomy Ontology [ZFA:0005073] |
| 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] |