Our method generates many overlapping peptides during the fragmentation process, enabling us to sequence very long stretches of unknown amino acids. The high quality of MS/MS spectra in combination with intelligent data mining, allows us to read the CDR3 like a book. The technique is so powerful that we were able to sequence a 20 kDa protein, which had no homolog in the database. http://www.creative-biolabs.com/next-generation-antibody-sequencing.html