[1] European Mol Biol Lab, Cell Biol & Biophys Unit, Heidelberg, Germany
[2] Univ Utrecht, Fac Sci, Dept Biol, Cell Biol Neurobiol & Biophys, Utrecht, Netherlands
[3] Heidelberg Univ, Fac Biosci, Heidelberg, Germany
[4] European Mol Biol Lab, Genome Biol Unit, Heidelberg, Germany
[5] Abberior Instruments GmbH, Gottingen, Germany
[6] European Mol Biol Lab, EMBL Imaging Ctr, Heidelberg, Germany
[7] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM USA
[8] FIRC Inst Mol Oncol, Milan, Italy