Your Query returns 10 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*440301AH0127429606HLA-B   
HLA-B*440301AY2503829606HLA-B   
HLA-B*440301AY2503839606HLA-B   
HLA-B*440301AY2503849606HLA-B   
HLA-B*440301AY2503859606HLA-B   
HLA-B*440301AY2503869606HLA-B   
HLA-B*440301AY2503879606HLA-B   
HLA-B*440301AY2503889606HLA-B   
HLA-B*440301AY2503899606HLA-B   
HLA-B*440301AJ5797129606

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

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Text2Knowledge ... Yong Huang 2002