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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:abnormal vestibular labyrinth morphology
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Accession:MP:0004427 term browser browse the term
Definition:any structural anomaly in the portion of the membranous labyrinth concerned with the sense of equilibration (vs. the cochlear labyrinth, which is concerned with the sense of hearing) and innervated by the vestibular nerve; it is located within the semicircular canals and vestibule of the bony labyrinth, and consists of the utricle, saccule, and the semicircular, utriculosaccular, and endolymphatic ducts
Synonyms:exact_synonym: abnormal labyrinthus vestibularis;   abnormal vestibular organ morphology

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absent otoliths term browser
Symbol Object Name Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Cyba cytochrome b-245 alpha chain IAGP DNA:deletion:splice junction: RGD PMID:19406829 RGD:11040542 NCBI chr19:50,487,598...50,495,669
Ensembl chr19:50,487,597...50,495,721
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G Cybam1Sdi cytochrome b-245 alpha chain;mutant 1,Sdi IAGP DNA:deletion:splice junction: RGD PMID:19406829 RGD:11040542

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  mammalian phenotype 5402
    hearing/vestibular/ear phenotype 23
      abnormal ear morphology 12
        abnormal inner ear morphology 11
          abnormal membranous labyrinth morphology 11
            abnormal vestibular labyrinth morphology 3
              abnormal endolymphatic duct morphology + 0
              abnormal otolith organ morphology + 0
              abnormal otolithic membrane morphology + 3
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