Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
fb36c12BC0443507955cb326    wu:fb36c12    msh6   
fb36c12NM_1828607955cb326    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