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 a pair of arteries on the brain that supply oxygen to most medial portions of frontal lobes and superior medial parietal lobes; the anterior cerebral arteries arise from the internal carotid artery and are part of the Circle of Willis