Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
hoxb5aNM_1311157955Z-3    hoxb1    hoxb3a    hoxb4a    hoxb6a    hoxb7a    hoxb8a    hoxb1a   
hoxb5aNM_1311017955ZF21    z-18    ZF-21    hoxb5    hox-B5    hox-2.1   
hoxb5aAB0269598090
hoxb5aAL6457827955

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

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Text2Knowledge ... Yong Huang 2002