Your Query returns 12 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*5001AH0127489606HLA-B   
HLA-B*5001AY2504309606HLA-B   
HLA-B*5001AY2504319606HLA-B   
HLA-B*5001AY2504329606HLA-B   
HLA-B*5001AY2504339606HLA-B   
HLA-B*5001AY2504349606HLA-B   
HLA-B*5001AY2504359606HLA-B   
HLA-B*5001AY2504369606HLA-B   
HLA-B*5001AY2504379606HLA-B   
HLA-B*5001AJ4959019606
HLA-B*5001AJ4959559606
HLA-B*5001AJ4960099606

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

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Text2Knowledge ... Yong Huang 2002