Term: pectoral fin mesenchyme
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: mesenchyme
Synonyms:
Definition: A mesh-like cell arrangement, less compact than an epithelium.
Ontology: Anatomy Ontology [ZFA:0000393]