Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
jhp0565NC_00092185963mutS   
jhp0565AE00148985963mutS   
jhp0565AE00143985963mutS   

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

Google

Text2Knowledge ... Yong Huang 2002