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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:absent sixth pharyngeal arch
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Accession:MP:0010644 term browser browse the term
Definition:absence of the structure of the sixth arch which contributes to the development of the sternocleidomastoid and trapezius muscles
Synonyms:exact_synonym: absent sixth branchial arch

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  mammalian phenotype 5417
    embryo phenotype 11
      abnormal embryo morphology 2
        abnormal embryonic tissue morphology 1
          abnormal pharyngeal arch morphology 0
            absent pharyngeal arches 0
              absent sixth pharyngeal arch 0
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