Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
dmlh2NG_0004107227Mlh2    dpms2    CG8169    dmlh-2    CT21953    Pms2   
dmlh2NM_0576757227Mlh2    pms2    dpms2    CG8169    dmlh-2   
dmlh2NT_0337787227Mlh2    pms2    dpms2    CG8169    dmlh-2   

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

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Text2Knowledge ... Yong Huang 2002