Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
KBF2NM_2032849606csl    CBF1    RBP-J    RBPJK    IGKJRB    IGKJRB1    MGC61669    RBPSUH   
KBF2NM_2032839606csl    CBF1    RBP-J    RBPJK    IGKJRB    IGKJRB1    MGC61669    RBPSUH   
KBF2NM_0053499606csl    CBF1    RBP-J    RBPJK    IGKJRB    IGKJRB1    MGC61669    RBPSUH   
KBF2NM_0158749606csl    CBF1    RBP-J    RBPJK    IGKJRB    IGKJRB1    MGC61669    RBPSUH   
KBF2BC0649769606IGKJRB1    RBPJK    IGKJRB    csl    CBF1    RBP-J    MGC61669    RBPSUH   
KBF2L089049606

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

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Text2Knowledge ... Yong Huang 2002