| 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: | melanocyte | 
|---|---|
| Synonyms: | melanophore | 
| Definition: | A pigment cell derived from the neural crest. Contains melanin-filled pigment granules, which gives a brown to black appearance. | 
| Ontology: | Anatomy Ontology [ZFA:0009091] |