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 tiny, motile hair-like projections from the epithelial cells that line the ventricles in the brain and the central canal of the spinal cord, which beat in concert and to move cerebrospinal fluid around the central nervous system