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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:abnormal second pharyngeal pouch morphology
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Accession:MP:0013223 term browser browse the term
Definition:any structural anomaly of the second branchial pouch located between the second and third branchial arches; the dorsal elongation of the second pouch endoderm of all mammals, with the exception of rodents, gives rise to the epithelial lining of palatine tonsils; in rodents, the ventral portion of the second pouch appears to degenerate whereas the remaining part is incorporated into the lateral border of the pharynx; it appears that rodents no longer require tonsils as their function is carried out by the NALT (Nose/Nasal-Associated Lymphoid Tissue) system in the upper respiratory tract
Synonyms:exact_synonym: abnormal 2nd branchial pouch morphology;   abnormal 2nd pharyngeal pouch morphology;   abnormal second branchial pouch morphology


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  mammalian phenotype 5422
    embryo phenotype 12
      abnormal embryo morphology 2
        abnormal embryonic tissue morphology 1
          abnormal pharyngeal pouch morphology 0
            abnormal second pharyngeal pouch morphology 0
              absent second pharyngeal pouch 0
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