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 or disruption of the typical staircase-like arrangement of the mechanosensitive hair bundles which are composed of thick long microvilli (stereocilia) and are located at the apical end of vestibular hair cells of the utricle and saccule