Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
hoxb5NM_1311017955ZF21    z-18    ZF-21    hox-B5    hox-2.1    hoxb5a   
HOXB5AY4146729606142960
HOXB5AY4146739598
HOXB5AY41467410090142960
HOXB5AF2879679606142960
HOXB5NM_0021479606HOX2    HU-1    HOX2A    Hox2.1    HHO.C10    142960
Hoxb5NT_03952110090142960
HOXB5NT_0107839606142960
Hoxb5NM_00826810090Hox-2.1    142960

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

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Text2Knowledge ... Yong Huang 2002