| Name: | ball |
|---|---|
| Synonyms: | yolk ball |
| Definition: | The anterior round region of the yolk cell present after the yolk extension forms during the segmentation period. |
| Ontology: | Anatomy Ontology [ZFA:0000006] |
| Name: | NaK ionocyte |
|---|---|
| Synonyms: | NaK-MRC, NaR cell |
| Definition: | Integument ionocyte rich in Na,K-ATPase. |
| Ontology: | Anatomy Ontology [ZFA:0005326] |