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Ontology Browser
Term:
abnormal second pharyngeal pouch morphology (MP:0013223)
Annotations: Rat: (0) Mouse: (2) Human: (0) Chinchilla: (0) Bonobo: (0) Dog: (0) Squirrel: (0) Pig: (0) Naked Mole-rat: (0) Green Monkey: (0)
Parent Terms Term With Siblings Child Terms
abnormal first pharyngeal pouch morphology  
abnormal fourth pharyngeal pouch morphology +   
abnormal second pharyngeal pouch morphology +   
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
abnormal third pharyngeal pouch morphology +   
abnormal ultimobranchial body morphology +   

Synonyms
Exact Synonyms: abnormal 2nd branchial pouch morphology ;   abnormal 2nd pharyngeal pouch morphology ;   abnormal second branchial pouch morphology
Definition Sources: PMID:20144910

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