Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Cytb5NG_0005157227Cytb    Cyt-b    TU36B    Cyt-b5    TU-36B    CG13279    CT32565    Cyt-b5-r   
Cytb5NM_0578067227Cytb    Cyt-b    TU36B    Cyt-b5    TU-36B    CG13279    Cyt-b5-r   
CYTB5NM_13645072271857    CG2140    l(2)01857    Cyt-b5   
CYTB5NM_16554072271857    CG2140    l(2)01857    Cyt-b5   
CYTB5NT_03377872271857    CG2140    l(2)01857    Cyt-b5   
Cytb5NT_0337797227Cytb    Cyt-b    TU36B    Cyt-b5    TU-36B    CG13279    Cyt-b5-r   
cytb5L384647370
cytb5AY1833767165
Cytb5AY2305085482

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

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Text2Knowledge ... Yong Huang 2002