Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
cb326BC0443507955fb36c12    wu:fb36c12    msh6   
cb326NM_1828607955fb36c12    wu:fb36c12    msh6   

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

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Text2Knowledge ... Yong Huang 2002