Anti-HLA-A2,B7 In Vivo Antibody - Ultra-Low Endotoxin (BB7.6) recognizes an epitope on Human HLA-A2,B7 (Note: Hundreds of HLA-A alleles have been described) This monoclonal antibody was purified using multi-step affinity chromatography methods such as Protein A or G depending on the species and isotype.