Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*38021AJ4958869606
HLA-B*38021AJ4959409606
HLA-B*38021AJ4959949606
HLA-B*38021AJ5498999606
HLA-B*38021AJ3089919606HLA-B   

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

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Text2Knowledge ... Yong Huang 2002