Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
opm2NC_0043547227Bj6    x14    NonA    diss    Bj6-1    non-A    CG4211    nonA/diss   
opm2NM_0786437227Bj6    x14    NonA    diss    Bj6-1    non-A    CG4211    nonA/diss   
opm2NM_1675057227Bj6    x14    NonA    diss    Bj6-1    non-A    CG4211    nonA/diss   

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

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Text2Knowledge ... Yong Huang 2002