Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*07021AF4360989606HLA-B   
HLA-B*07021AJ4958609606
HLA-B*07021AJ4958619606
HLA-B*07021AJ4958629606
HLA-B*07021AJ5498839606

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

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Text2Knowledge ... Yong Huang 2002