Your Query returns 17 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
mNAT1NM_05308910090Tbdn-1    MGC29428    tubedown    6330400I15    5730450D16Rik    Narg1    602659
mNAT1BC03016710090Tbdn-1    tubedown    MGC29428    6330400I15    Narg1    602659
mNAT1BC05001710090Tbdn-1    tubedown    MGC29428    6330400I15    Narg1    602659
Mnat1NM_00861210090P36    MAT1    602659
Mnat1NW_04776010116
MNAT1AY1655129606602659
MNAT1BC0008209606MAT1    RNF66    602659
MNAT1AY4099869606602659
MNAT1AY4099879598
MNAT1AY40998810090602659
MNAT1NM_0024319606MAT1    RNF66    602659
Mnat1NT_03955110090602659
MNAT1G674809606602659
MNAT1G674819606602659
MNAT1G674829606602659
MNAT1NT_0264379606602659
Mnat1NM_15347210116

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

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Text2Knowledge ... Yong Huang 2002