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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

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Accession:MP:0009877 term browser browse the term
Definition:a projection of bone, sometimes a benign tumor (osteochondroma), that is capped by cartilage and arises from a bone that develops from cartilage; these usually arise on the joints of bones and are most commonly found on ribs, and also the ankles, knees, shoulders, elbows and hips

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  mammalian phenotype 5402
    skeleton phenotype 434
      abnormal skeleton morphology 339
        abnormal bone structure 195
          exostosis 0
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