Your Query returns 18 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
ccnb1BC0454927955cycb1    cb267    ccnb    cycb   
ccnb1BC0555537955cycb1    cb267    ccnb    cycb    fb16e07    fi21c01    wu:fb16e07    wu:fi21c01   
Ccnb1NM_17230110090Cycb-4    MGC18763    Ccnb1-rs13    123836
Ccnb1NW_04761710116
Ccnb1NM_17199110116
CCNB1AY3384919606123836
CCNB1BC0065109606CCNB    123836
CCNB1NM_0319669606CCNB    123836
Ccnb1NT_03959010090123836
Ccnb1BC05911310116
Ccnb1BC01147810090MGC18763    123836
CCNB1G732789606123836
CCNB1G732799606123836
CCNB1G732809606123836
CCNB1G732819606123836
CCNB1NT_0064319606123836
ccnb1NM_1315137955ccnb    cycb    cb267    cycb1    fa19g04    fb16d01    fb16e07    fi21c01    wu:fa19g04    wu:fb16d01    wu:fb16e07    wu:fi21c01   
ccnb1BC0671927955cycb1    cb267    ccnb    cycb    fb16e07    fi21c01    wu:fb16e07    wu:fi21c01    wu:fa19g04    wu:fb16d01    fb16d01    fa19g04   

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

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Text2Knowledge ... Yong Huang 2002