Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*2704 variantAH0110569606HLA-B   
HLA-B*2704 variantAF4081609606HLA-B   
HLA-B*2704 variantAF4081619606HLA-B   
HLA-B*2704 variantAH0101029606HLA-B   
HLA-B*2704 variantAF3238679606HLA-B   
HLA-B*2704 variantAF3238689606HLA-B   
HLA-B*2704 variantAH0101039606HLA-B   
HLA-B*2704 variantAF3238699606HLA-B   
HLA-B*2704 variantAF3238709606HLA-B   

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

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Text2Knowledge ... Yong Huang 2002