About the Authors
Department of Molecular Biology, Max Planck Institute for Infection Biology, Berlin, Germany
Microarray Core Facility, Max Planck Institute for Infection Biology, Berlin, Germany
The authors have declared that no competing interests exist.
APM and TFM conceived and designed the experiments. APM and AM performed the experiments. APM analyzed the data. HJM contributed reagents/materials/analysis tools. APM wrote the paper.