Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Mdh-2NM_00861710090MDH    Mor1    Mor-1    Mdh2   
Mdh-2AF0686873847

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

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Text2Knowledge ... Yong Huang 2002