Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGST-IINM_17499510090GST2    MGC41409    Mgst2   
MGST-IIBC0254169606GST2    MGC14097    MGST2   
MGST-IINM_0024139606GST2    MGC14097    MGST2   
MGST-IIBC02853510090MGC41409    GST2    Mgst2   

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

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Text2Knowledge ... Yong Huang 2002