Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-DRB1*04AJ5747889606
HLA-DRB1*04AJ5747889606
HLA-DRB1*04AF2350349606HLA-DRB1   
HLA-DRB1*04AF2916759606HLA-DRB1   
HLA-DRB1*04AF4976439606HLA-DRB1   
HLA-DRB1*04AJ0110659606

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

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Text2Knowledge ... Yong Huang 2002