Term Name:	endocardial cushion to mesenchymal transition involved in heart chamber septation
Synonyms:
Definition:	A transition where an endocardial cell loses apical/basolateral polarity, severs intercellular adhesive junctions, degrades basement membrane components and becomes a migratory mesenchymal cell that will contribute to the formation of the heart septum.
Ontology:	GO: Biological Process [GO:0003200]    QuickGO    AmiGO