About the Authors
Cellular Biophysics Group, German Cancer Research Center, Heidelberg, Germany
Experimental Physics I, University of Bayreuth, Bayreuth, Germany
The authors have declared that no competing interests exist.
Conceived and designed the experiments: DM GG MW. Performed the experiments: DM GG. Analyzed the data: DM GG MW. Contributed reagents/materials/analysis tools: DM GG MW. Wrote the paper: DM GG MW.