Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGC12237BC0052189606MAT-II    TGR    MATIIbeta    MAT2B   
MGC12237NM_0132839606TGR    MAT-II    MATIIbeta    MAT2B   
MGC12237NM_1827969606TGR    MAT-II    MATIIbeta    MAT2B   
MGC12237BC0666459606MAT-II    TGR    MATIIbeta    MAT2B   

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

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Text2Knowledge ... Yong Huang 2002