Term: extension proliferative region
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: proliferative region
Synonyms: cell cycle, cell division, proliferation
Definition: Anatomical cluster which consists of rapidly dividing cells.
Ontology: Anatomy Ontology [ZFA:0000098]