Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
P450-B1NM_07890472276a2    91R    91-R    P450    P-450    CG9438    CYP6A2    P450-B    P-450-B   
P450-B1NT_03377872276a2    91R    91-R    P450    P-450    CG9438    CYP6A2    P450-B    P-450-B   

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

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Text2Knowledge ... Yong Huang 2002