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 layer of loose smooth muscle bundles (tunica muscularis) located beneath the mucosa of the gallbladder wall and composed of fibers that are not arranged in distinct layers but lie in circular, longitudinal, and oblique directions; when these fibers contract, the gallbladder’s contents are released through the cystic duct into the bile duct and eventually emptied into the duodenum to aid in the digestion of fats