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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 fourth pharyngeal arch morphology
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Accession:MP:0006340 term browser browse the term
Definition:any structural anomaly of the fourth arch which contributes to development of the cartilage of the larynx, laryngeal, pharyngeal, and soft palate muscles, superior parathyroid gland, and C-cells of the thymus
Synonyms:exact_synonym: abnormal fourth branchial arch morphology

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  mammalian phenotype 5373
    craniofacial phenotype 47
      abnormal craniofacial morphology 47
        abnormal craniofacial development 10
          abnormal pharyngeal arch morphology 0
            abnormal fourth pharyngeal arch morphology 0
              abnormal fourth pharyngeal arch artery morphology + 0
              absent fourth pharyngeal arch 0
              small fourth pharyngeal arch + 0
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