Term Name:	endocardial cushion
Synonyms:	atrioventricular canal cushion, atrioventricular cushion, AV cushion, cardiac cushion, endocardial cushion tissue, endocardial cushions
Definition:	The endocardial cushion is a specialized region of mesenchymal cells that will give rise to the heart septa and valves[GO]. Swellings of tissue present between the endocardial and myocardial cell layers that will give rise to the interstitial cells of the cardiac valves[ZFA].
Ontology:	Cell Ontology [UBERON:0002062]