Term: endocardial precursor fibronectin fibril
Name: endocardial precursor
Synonyms:
Definition: Is a portion of tissue part of the heart primordium which will give rise to the endocardium.
Ontology: Anatomy Ontology [ZFA:0005489]

Name: fibronectin fibril
Synonyms:
Definition: A supramolecular fiber formed from fibronectin molecules. The fibrils are 5 to 25nm in diameter and can form branched meshworks.
Ontology: GO: Cellular Component [GO:0061800]    QuickGO    AmiGO