Your Query returns 17 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
p55CDCNM_023223100902310042N09Rik    Cdc20   
p55CDCBC0128279606CDC20   
p55CDCBC0128039606CDC20   
p55CDCBC0094259606CDC20   
p55CDCBC0242579606CDC20   
p55CDCBC0100449606CDC20   
p55CDCBC0006249606CDC20   
p55CDCBC0010889606CDC20   
p55CDCBC0159989606CDC20   
p55CDCBC0312949606CDC20   
p55CDCBC0062729606CDC20   
p55CDCBC0094269606CDC20   
p55CDCBC0133039606CDC20   
p55CDCNM_0012559606CDC20   
p55CDCAF31220810090Cdc20   
p55CDCBC00321510090Cdc20   
p55cdcNM_17199310116Cdc20   

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

Google

Text2Knowledge ... Yong Huang 2002