Your Query returns 21 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
gstm1AJ4169988355
GSTM1M832497370
GSTM1J038179606138350
Gstm1NM_01035810090Gstb1    Gstb-1    138350
Gstm1NW_04762710116
GSTM1BC0240059606GST1    GSTM1-1    GSTM1a-1a    GSTM1b-1b    GTH4    GTM1    MU-1    MGC26563    MU    H-B    138350
GSTM1S629359606GSTM1b    138350
GSTM1AF2007099541
GSTM1NM_0005619606MU    H-B    GST1    GTH4    GTM1    MU-1    GSTM1-1    MGC26563    GSTM1a-1a    GSTM1b-1b    138350
GSTM1NM_1464219606MU    H-B    GST1    GTH4    GTM1    MU-1    GSTM1-1    MGC26563    GSTM1a-1a    GSTM1b-1b    138350
GSTM1AH00190710090138350
GSTM1L1344810090138350
GSTM1L1344910090138350
GSTM1L1345010090138350
GSTM1NM_1758259913
Gstm1NT_03923910090138350
Gstm1BC00382210090138350
Gstm1BC04675810090138350
Gstm1BC06317210116GSTA3   
Gstm1NM_01701410116GSTA3   
GSTM1NT_0192739606138350

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

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Text2Knowledge ... Yong Huang 2002