Your Query returns 20 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-DRBU089329606
HLA-DRBU365719606
HLA-DRBM811709606
HLA-DRBM811719606
HLA-DRBM811749606
HLA-DRBM811759606
HLA-DRBM811799606
HLA-DRBM811809606
HLA-DRBAF0312649544DRB*W308   
HLA-DRBAF0312659544DRB*W309   
HLA-DRBAF0312689544DRB*W2001   
HLA-DRBAF0312699544DRB*W2101   
HLA-DRBAF0312709544DRB*W2102   
HLA-DRBAF0312719593DRB1*1001   
HLA-DRBAF0312729593DRB1*0308   
HLA-DRBAF2075489606HLA-DRB*NC   
HLA-DRBX716109606
HLA-DRBX655859606
HLA-DRBX655869606
HLA-DRBAF4360979606HLA-DRB1*0411   

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

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Text2Knowledge ... Yong Huang 2002