title: Observations concerning the septation-process in the truncus arteriosus of the chick embryo.
mesh_terms: D000818:Animals; D001011:Aorta / Q000196:embryology*; D002642:Chick Embryo; D006352:Heart Ventricles / Q000196:embryology; D011651:Pulmonary Artery / Q000196:embryology*