preferred_name: Fibrocollagenous connective tissue of muscular part of interatrial septum
preferred_name_lc: fibrocollagenous connective tissue of muscular part of interatrial septum
label: Fibrocollagenous connective tissue of muscular part of interatrial septum
label_lc: fibrocollagenous connective tissue of muscular part of interatrial septum