MAIT cells do not recognize viral peptide presented by classic MHC. (A) Representative Rh123-CD161 staining of CD3⁺CD4⁻ PBLs. Percentages are boxed. (B) Representative Vα7.2 and HLA-A*0201-EBV tetramer staining of PBLs from HLA-A*0201⁺ or HLA-A*0201⁻ healthy donors, gated according to Rh123-CD161 expression as in panel A. Representative of 4 HLA-A*0201⁺ donors studied in independent experiments.