The Pab Rb x human HLA-DRB3 (HLA Class II Histocompatibility Antigen, DR beta 3 Chain, MHC Class II Antigen DRB3, MGC117330) (FITC) antibody from United States Biological is a Rabbit Polyclonal antibody to HLA-DRB3. This antibody recognizes Homo Sapiens, and Human antigen. The Pab Rb x human HLA-DRB3 (HLA Class II Histocompatibility Antigen, DR beta 3 Chain, MHC Class II Antigen DRB3, MGC117330) (FITC) antibody has been shown to work in the following applications: Western Blot.