Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Hox-2.3BC0153459606HOX2    HOX2C    HHO.C1    HOXB7   
Hox-2.3NM_0045029606HOX2    HOX2C    HHO.C1    HOXB7   
Hox-2.3NM_01046010090Hoxb7   

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

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Text2Knowledge ... Yong Huang 2002