Term: pectoral fin apical ectodermal ridge
Name: pectoral fin
Synonyms: forefin, pectoral fins
Definition: Paired fin that is located in the thoracic region of the body.
Ontology: Anatomy Ontology [ZFA:0001161]

Name: apical ectodermal ridge
Synonyms:
Definition: Proliferative region that is part of the developing fin fold or fin.
Ontology: Anatomy Ontology [ZFA:0001702]