Integrative Transcriptomics, Center for Bioinformatics, University of Tübingen, Sand 14, 72076 Tübingen, Germany. guenter.jaeger@uni-tuebingen.de.|Integrative Transcriptomics, Center for Bioinformatics, University of Tübingen, Sand 14, 72076 Tübingen, Germany. guenter.jaeger@uni-tuebingen.de.|Integrative Transcriptomics, Center for Bioinformatics, University of Tübingen, Sand 14, 72076 Tübingen, Germany. guenter.jaeger@uni-tuebingen.de.