| Name: | yolk | 
|---|---|
| Synonyms: | yolk cell | 
| Definition: | Giant syncytial uncleaved cell containing nutrient store for embryonic development in the form of semicrystalline phospholipoprotein and contained within yolk granules. | 
| Ontology: | Anatomy Ontology [ZFA:0000084] | 
| Name: | blood vessel endothelial cell | 
|---|---|
| Synonyms: | blood vessel endothelial cells | 
| Definition: | |
| Ontology: | Anatomy Ontology [ZFA:0009036] |