Term: horizontal myoseptum endothelial cell
Name: horizontal myoseptum
Synonyms: horizontal septum
Definition: A connective tissue partition developing at the apex of the chevron-shaped myotome and separating dorsal (epaxial) and ventral (hypaxial) body wall muscle masses.
Ontology: Anatomy Ontology [ZFA:0000671]

Name: endothelial cell
Synonyms: endothelial cells
Definition:
Ontology: Anatomy Ontology [ZFA:0009065]