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.
degeneration or loss of the sensory epithelial cells of the maculae and cristae of the membranous labyrinth of the inner ear which are normally in synaptic contact with the vestibular nerve