Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Ggtb2NM_01737710090B4galt2    137060
Ggtb2NM_02230510090GalT    Ggtb    B-1,4-GalT    B4galt1    137060
GGTB2NM_0014979606GT1    GTB    B4GAL-T1    beta4Gal-T1    B4GALT1    137060
GGTB2NM_1775129913B4GALT1   

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

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Text2Knowledge ... Yong Huang 2002