Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Cux-1NM_00998610090CDP    Cux    Cux1    Phox2    Cutl1   
Cux-1BC05437010090Cux    Phox2    CDP    Cux1    Cutl1   
Cux-1BC01428910090Cux    Phox2    CDP    Cux1    Cutl1   
Cux-1NM_19860210090CDP    Cux    Cux1    Phox2    Cutl1   
Cux-1M5591812618
Cux-1NC_00142712618

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

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Text2Knowledge ... Yong Huang 2002