Your Query returns 10 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
hoxb2NM_1311167955Z-151    hoxb2a   
HOXB2AF0120989685
HOXB2X789789606142967
HOXB2U125909606142967
HOXB2NM_0021459606K8    HOX2    HOX2H    Hox-2.8    142967
Hoxb2NT_03952110090142967
Hoxb2BC01941410090142967
hoxb2Y139497955
HOXB2NT_0107839606142967
Hoxb2NM_13403210090Hox-2.8    142967

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

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Text2Knowledge ... Yong Huang 2002