Your Query returns 9 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*400101AH0127389606HLA-B   
HLA-B*400101AY2503509606HLA-B   
HLA-B*400101AY2503519606HLA-B   
HLA-B*400101AY2503529606HLA-B   
HLA-B*400101AY2503539606HLA-B   
HLA-B*400101AY2503549606HLA-B   
HLA-B*400101AY2503559606HLA-B   
HLA-B*400101AY2503569606HLA-B   
HLA-B*400101AY2503579606HLA-B   

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

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Text2Knowledge ... Yong Huang 2002