Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CP beta subunitNM_0576577227CG17158    Ancpbeta    capping protein    Capping-protein-beta    cpb   
CP beta subunitNG_0003967227CG17158    CT32517    Ancpbeta    Capping-protein-beta    cpb   

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

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Text2Knowledge ... Yong Huang 2002