Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGC18763NM_17230110090Cycb-4    Ccnb1-rs13    Ccnb1   
MGC18763BC01147810090Ccnb1   

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

Google

Text2Knowledge ... Yong Huang 2002