Term: extension epidermis
Name: extension
Synonyms: yolk extension
Definition: The posterior elongated region of the yolk cell that forms during the segmentation period.
Ontology: Anatomy Ontology [ZFA:0000106]

Name: epidermis
Synonyms:
Definition: A cellular, multilayered epithelium derived from the ectoderm. Zebrafish epidermis consists only of living cells unlike terrestrial vertebrates in which dead, keratinized cells are present.
Ontology: Anatomy Ontology [ZFA:0000105]