Term: blastoderm margin
Name: blastoderm
Synonyms:
Definition: Embryonic structure that is composed of the cellular part of the embryo, excluding the yolk cell, derived from the blastodisc by early morphogenesis; refers particularly to the time when the cell array is sheet-like, between 30%-epiboly and the end of gastrulation.
Ontology: Anatomy Ontology [ZFA:0001176]

Name: margin
Synonyms:
Definition: Embryonic structure, the edge of the blastoderm.
Ontology: Anatomy Ontology [ZFA:0000038]