Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Cyp2b9NM_01000010090Cyp2b   
Cyp2b9NT_08113010090
Cyp2b9AY35516210096

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

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Text2Knowledge ... Yong Huang 2002