Bioinformatics and Deep-Sequencing Unit, Max-Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany. barenboim@ie-freiburg.mpg.de|Bioinformatics and Deep-Sequencing Unit, Max-Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany. barenboim@ie-freiburg.mpg.de