Fig. 1.
MS/MS spectra (precursor ion m/z 349.5).
(A) Synthetic KQSSKALQR peptide added to eluate from a control cell line. (B) Eluate from HLA-A*0301–positive primary CML cells (patient 1 in the tables). (C) Eluate from K562 cells transfected with HLA-A*0301. Relevant fragmentation ions are labeled. *denotes immonium ion.