MeSH definition : A subtype of HLA-DRB beta chains that includes over one hundred allele variants. The
HLA-DRB1 subtype is associated with several of the HLA-DR SEROLOGICAL SUBTYPES.;
A subtype of HLA-DRB beta chains that includes over one hundred allele variants. The
HLA-DRB1 subtype is associated with several of the HLA-DR SEROLOGICAL SUBTYPES.