Your Query returns 25 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
pms2NM_0576757227Mlh2    dmlh2    dpms2    CG8169    dmlh-2   
pms2NT_0337787227Mlh2    dmlh2    dpms2    CG8169    dmlh-2   
PMS2NC_0011454932MLH1   
Pms2AF0682717227
Pms2AY0698337227
Pms2NM_00888610090Pmsl2    600259
PMS2AC0059959606600259
Pms2NG_0004107227Mlh2    dmlh2    dpms2    CG8169    dmlh-2    CT21953   
PMS2U2872410090600259
Pms2NT_03932410090600259
Pms2AF38128710116
PMS2G183389606600259
PMS2G317569606600259
PMS2G317579606600259
PMS2G317649606600259
PMS2G672729606600259
PMS2G672739606600259
PMS2G672749606600259
PMS2G672759606600259
PMS2G672769606600259
PMS2G672779606600259
PMS2NM_0005359606PMSL2    HNPCC4    PMS2CL    600259
Pms2AE0038117227
PMS2NT_0078199606600259
PMS2NT_0795929606600259

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

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Text2Knowledge ... Yong Huang 2002