Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CPbeta1NM_00979810090CPB1    CPB2    Cappb1    CPbeat2    CPbeta2    1700120C01Rik    Capzb   
CPbeta1BC00205310090CPB1    CPB2    CPbeat2    CPbeta2    Capzb   

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

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