title: An extra atrioventricular node in an anomalous heart of a calf.
abstract: An extra atrioventricular node in a double outlet ventricle with a quite normal inflow septum in a calf is described. The anomaly resembles the topography of the conducting system in the calf heart in the embryonic stages from 13.5 mm-90 mm.
mesh_terms: D000015:Abnormalities, Multiple / Q000473:pathology / Q000662:veterinary*; D000818:Animals; D001283:Atrioventricular Node / Q000002:abnormalities* / Q000473:pathology; D002417:Cattle; D002418:Cattle Diseases / Q000473:pathology*; D005260:Female; D006329:Heart Conduction System / Q000002:abnormalities*; D006330:Heart Defects, Congenital / Q000473:pathology / Q000662:veterinary*