The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories (ftp://ftp.informatics.jax.org/pub/reports/index.html). For more information about these ontologies, see the MGI Publications Page at http://www.informatics.jax.org/mgihome/other/publications.shtml.
any structural anomaly of the short trunk that recieves most of the cardiac veins carrying the blood from the myocardium and delivers it to the right atrium, with the sinoatrial connection occurring between the inferior vena cava and the atrioventricular orifice