Comprehensive Analysis of the Naturally Processed Peptide Repertoire: Differences between HLA-A and B in the Immunopeptidome. oleh Ingrid M M Schellens, Ilka Hoof, Hugo D Meiring, Sanne N M Spijkers, Martien C M Poelen, Jacqueline A M van Gaans-van den Brink, Kees van der Poel, Ana I Costa, Cecile A C M van Els, Debbie van Baarle, Can Kesmir