Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
zgc:56481BC0494567955MGC56481    Hmgcs1   
zgc:56481NM_2010857955Hmgcs1    MGC56481   

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

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Text2Knowledge ... Yong Huang 2002