Term: heart tube extracellular matrix
Name: heart tube
Synonyms:
Definition: Cavitated compound organ that will become the adult heart following looping morphogenesis and valve formation.
Ontology: Anatomy Ontology [ZFA:0000360]

Name: extracellular matrix
Synonyms: matrisome, proteinaceous extracellular matrix
Definition: A structure lying external to one or more cells, which provides structural support, biochemical or biomechanical cues for cells or tissues.
Ontology: GO: Cellular Component [GO:0031012]    QuickGO    AmiGO