Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CYPIIB6NM_0007679606CPB6    IIB1    P450    CYP2B    CYP2B6   
CYPIIB6NT_0111099606CPB6    IIB1    P450    CYP2B    CYP2B6   
CYPIIB6BC0674309606CPB6    IIB1    P450    CYP2B    CYP2B6   
CYPIIB6BC0674319606CPB6    IIB1    P450    CYP2B    CYP2B6   
CYPIIB6NG_0000089606CPB6    IIB1    P450    CYP2B    CYP2B6   

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

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Text2Knowledge ... Yong Huang 2002