Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
H26D21.2NC_0032796239CELK01808    msh-2   
H26D21.2NM_0588016239CELK01808    msh-2   

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

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Text2Knowledge ... Yong Huang 2002