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MAMMALIAN PHENOTYPE - ANNOTATIONS

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.
Term:abnormal median aperture morphology
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Accession:MP:0009802 term browser browse the term
Definition:any structural anomaly in the large midline opening of the posterior inferior part of the roof of the fourth ventricle that connects the fourth ventricle to the posterior cerebromedullary cistern and the spinal cord
Synonyms:exact_synonym: abnormal arachnoid foramen morhpology;   abnormal foramen of Magendie morphology


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  mammalian phenotype 5420
    nervous system phenotype 379
      abnormal nervous system morphology 217
        abnormal brain morphology 140
          abnormal brain ventricular system morphology 34
            abnormal median aperture morphology 0
              absent median aperture 0
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