Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
GSTM1bS629359606GSTM1   
GSTM1BJ038179606
GSTM1bX686769606

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

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Text2Knowledge ... Yong Huang 2002