title: The cellular architecture of the human atrioventricular node, with a note on its morphology in the presence of a left superior vena cava.
mesh_terms: D002675:Child, Preschool; D003331:Coronary Vessels / Q000033:anatomy & histology; D006329:Heart Conduction System / Q000033:anatomy & histology*; D006344:Heart Septal Defects, Atrial / Q000473:pathology; D006345:Heart Septal Defects, Ventricular / Q000473:pathology; D006652:Histological Techniques; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D014683:Vena Cava, Superior / Q000002:abnormalities*