Your Query returns 28 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
TRA1AF5087919796GRP94   
tra1NM_1313967955nr1a1    TR[a]1    thra   
TRA1NM_01163610090NOR1    Tras1    Tras2    MmTRA1a    MmTRA1b    MuPLSCR2    Plscr1    191175
TRA1BC00201710090NOR1    MmTRA1a    MmTRA1b    MuPLSCR2    Plscr1    191175
tra1BC0639517955GP96    GRP94    tra-1   
TRA1X7356333009
TRA1U000604932
tra1AJ3904895476
Tra1NM_01163110090gp96    ERp99    GRP94    Tra-1    191175
TRA1M337169606191175
TRA1BC0091959606GP96    GRP94    191175
TRA1NM_0032999606ECGP    GP96    GRP94    191175
TRA1D7835410090191175
TRA1D7835510090191175
TRA1NM_1747009913
Tra1NT_03950010090191175
Tra1BC01143910090ERp99    GRP94    gp96    191175
Tra1BC01044510090ERp99    GRP94    gp96    191175
TRA1AY33576832630
TRa1U547967955
tra1NM_1982107955GP96    GRP94    tra-1   
TRA1BC0666569606GP96    GRP94    ECGP    191175
Tra1AE0037877227
TRA1NT_0195469606191175
TRA1NM_2042899031
Tra1NM_1363177227Tra-1    CG2905    CG10549   
Tra1NT_0337787227Tra-1    CG2905    CG10549   
TRA10N/A

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

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Text2Knowledge ... Yong Huang 2002