Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*1503AH0127289606HLA-B   
HLA-B*1503AY2502709606HLA-B   
HLA-B*1503AY2502719606HLA-B   
HLA-B*1503AY2502729606HLA-B   
HLA-B*1503AY2502739606HLA-B   
HLA-B*1503AY2502749606HLA-B   
HLA-B*1503AY2502759606HLA-B   
HLA-B*1503AY2502769606HLA-B   
HLA-B*1503AY2502779606HLA-B   
HLA-B*1503AJ4958719606
HLA-B*1503AJ4959259606
HLA-B*1503AJ4959799606

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

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Text2Knowledge ... Yong Huang 2002