preferred_name: Fibrocollagenous connective tissue of deep layer of myocardium of atrium
preferred_name_lc: fibrocollagenous connective tissue of deep layer of myocardium of atrium
label: Fibrocollagenous connective tissue of deep layer of myocardium of atrium
label_lc: fibrocollagenous connective tissue of deep layer of myocardium of atrium