Your Query returns 7 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*51AJ5060459606
HLA-B*51AJ5060459606
HLA-B*51AJ5060529606
HLA-B*51AJ5060549606
HLA-B*51AH0113579606HLA-B   
HLA-B*51AY0574009606HLA-B   
HLA-B*51AY0574019606HLA-B   

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

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Text2Knowledge ... Yong Huang 2002