Fibrocollagenous connective tissue of myocardium proper of muscular part of interatrial septum
fibrocollagenous connective tissue of myocardium proper of muscular part of interatrial septum
Fibrocollagenous connective tissue of myocardium proper of muscular part of interatrial septum
fibrocollagenous connective tissue of myocardium proper of muscular part of interatrial septum