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MAMMALIAN PHENOTYPE - ANNOTATIONS

The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories (ftp://ftp.informatics.jax.org/pub/reports/index.html). For more information about these ontologies, see the MGI Publications Page at http://www.informatics.jax.org/mgihome/other/publications.shtml.
Term:decreased tracheal cartilage ring number
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Accession:MP:0004551 term browser browse the term
Definition:less than the expected number of the incomplete C- or U-shaped rings of hyaline cartilage that support the trachea and prevent it from collapsing
Comment:The rodent trachea contains C-shaped incomplete cartilaginous rings that vary in number between mice (15-18) and rats (20-25). A total of 15-20 incomplete U-shaped cartilaginous rings support the human trachea. {xref="ISBN:978-0-12-802900-8"}
Synonyms:exact_synonym: reduced tracheal cartilage ring number;   reduced tracheal ring number


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  mammalian phenotype 5373
    respiratory system phenotype 45
      abnormal respiratory system morphology 31
        abnormal trachea morphology 5
          abnormal tracheal cartilage morphology 3
            decreased tracheal cartilage ring number 0
              absent tracheal cartilage rings 0
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