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.
reduced amount of myelin present in the form of a myelin sheath surrounding an axon due to defects in the synthesis and formation of myelin
Comment:
Dysmyelination refers to malformed and defective myelin sheath as opposed to the destruction of previously normal myelin that is seen in demyelination. Dysmyelination disorders often arise from hereditary mutations that affect the synthesis and formation of myelin.