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The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories ( For more information about these ontologies, see the MGI Publications Page at

Term:increased myelin sheath amount
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Accession:MP:0020458 term browser browse the term
Definition:increase in the amount of myelin surrounding nerve fibers or axons

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  mammalian phenotype 5190
    nervous system phenotype 344
      abnormal nervous system morphology 196
        abnormal neuron morphology 63
          abnormal neurite morphology 17
            abnormal axon morphology 10
              abnormal myelin sheath morphology 9
                abnormal myelin sheath amount 3
                  increased myelin sheath amount 0
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