Department of Neurobiology and Genetics, Biocenter, University of Würzburg, Am Hubland, Würzburg, Germany. b.schmid@biozentrum.uni-wuerzburg.de|Department of Neurobiology and Genetics, Biocenter, University of Würzburg, Am Hubland, Würzburg, Germany. b.schmid@biozentrum.uni-wuerzburg.de|Department of Neurobiology and Genetics, Biocenter, University of Würzburg, Am Hubland, Würzburg, Germany. b.schmid@biozentrum.uni-wuerzburg.de|Department of Neurobiology and Genetics, Biocenter, University of Würzburg, Am Hubland, Würzburg, Germany. b.schmid@biozentrum.uni-wuerzburg.de|Department of Neurobiology and Genetics, Biocenter, University of Würzburg, Am Hubland, Würzburg, Germany. b.schmid@biozentrum.uni-wuerzburg.de