Your Query returns 13 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*5301AH0127519606HLA-B   
HLA-B*5301AY2504549606HLA-B   
HLA-B*5301AY2504559606HLA-B   
HLA-B*5301AY2504569606HLA-B   
HLA-B*5301AY2504579606HLA-B   
HLA-B*5301AY2504589606HLA-B   
HLA-B*5301AY2504599606HLA-B   
HLA-B*5301AY2504609606HLA-B   
HLA-B*5301AY2504619606HLA-B   
HLA-B*5301AJ4959059606
HLA-B*5301AJ4959599606
HLA-B*5301AJ4960139606
HLA-B*5301AJ5499149606

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

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Text2Knowledge ... Yong Huang 2002