Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Ucn2NM_01191010090UII    prepro-UII    Uts2   
Ucn2NM_01916010116Uts2   
UCN2NM_0067869606UII    U-II    UTS2   
UCN2NM_0219959606UII    U-II    UTS2   
Ucn2NM_13338510116Ucn3   

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002