Your Query returns 11 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Slc38a1NM_13408610090NAT2    AA408026    608490
Slc38a1NW_04778410116
SLC38A1BC0106209606ATA1    NAT2    SAT1    SNAT1    608490
SLC38A1AY4188069606608490
SLC38A1AY4188079598
SLC38A1AY41880810090608490
Slc38a1NT_03962110090608490
Slc38a1BC03037810090NAT2    608490
Slc38a1NM_13883210116Ata1    GlnT    Sat1   
SLC38A1NT_0294199606608490
SLC38A1NM_0306749606ATA1    NAT2    SAT1    SNAT1    608490

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

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Text2Knowledge ... Yong Huang 2002