背景资料:The monoclonal antibody 27-11-13S recognizes with the alpha3 domain of H-2Db class I MHC antigen. The antibody cross-reacts with the alpha3 domain of H-2Dd, H-2Dq, H-2Ld and H-2Lq but not H-2Kb. Reactivity with haplotypes k, f, p, r, and s has not been observed.