Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*4001AH0124489606HLA-B   
HLA-B*4001AY1781879606HLA-B   
HLA-B*4001AY1781889606HLA-B   
HLA-B*4001AJ5499029606

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

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Text2Knowledge ... Yong Huang 2002