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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:small first pharyngeal arch
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Accession:MP:0006341 term browser browse the term
Definition:reduced size of the first branchial arch
Synonyms:exact_synonym: decreased first pharyngeal arch size;   small first branchial arch

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  mammalian phenotype 5380
    embryo phenotype 6
      abnormal embryo morphology 2
        abnormal embryonic tissue morphology 1
          abnormal pharyngeal arch morphology 0
            abnormal first pharyngeal arch morphology 0
              small first pharyngeal arch 0
                first pharyngeal arch hypoplasia 0
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