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 anomaly in the process by which immature Schwann cells surround axons of mixed caliber and send cytoplasmic processes that resemble lamellipodia between axons, to progressively choose and segregate the larger axons at the periphery of the bundle