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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 trochlear nerve morphology
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Accession:MP:0001063 term browser browse the term
Definition:any structural anomaly of the fourth cranial nerve, which normally carries the motor innervation of the superior oblique muscles of the eye
Synonyms:exact_synonym: abnormal CN-IV morphology;   trochlear nerve abnormalities;   trochlear nerve dysplasia

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  mammalian phenotype 5380
    nervous system phenotype 362
      abnormal nervous system morphology 209
        abnormal somatic nervous system morphology 38
          abnormal cranial nerve morphology 7
            abnormal trochlear nerve morphology 0
              absent trochlear nerve 0
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