1. Department of Biophysics and Cell Biology, University of Debrecen, 98 Nagyerdei krt. H‐4032 Debrecen (Hungary), Fax: (+36) 52‐412‐623
2. Cell Biology and Signaling Research Group of the Hungarian Academy of Sciences, Research Centre for Molecular Medicine, Medical and Health Science Center, University of Debrecen, 98 Nagyerdei krt. H‐4032 Debrecen (Hungary)