Your Query returns 20 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Dat1NM_01002010090DAT    Slc6a3    126455
DAT1AF1191179606SLC6A3    126455
DAT1NM_0010449606DAT    SLC6A3    126455
Dat1NM_01269410116Slc6a3   
Dat1NM_0791157227NAT1    aaNAT    Aanat1    CG3318    AA-NAT1    Dat   
Dat1NM_2062127227NAT1    aaNAT    Aanat1    CG3318    AA-NAT1    Dat   
Dat1NT_0337787227NAT1    aaNAT    Aanat1    CG3318    AA-NAT1    Dat   
dat1AE006147747PM1068   
DAT1Z492104932
Dat1NW_04756210116
DAT1BC0263119606126455
DAT1U922629606126455
DAT1Y101419606126455
DAT1NM_0186409606126455
DAT1AJ23830910090126455
dat1NC_002663747
DAT1NT_0097149606126455
Dat1NM_13911210116
dat1NC_00090771421
DAT1NC_0011454932

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

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Text2Knowledge ... Yong Huang 2002