[1] Paul Ehrlich Inst, Div Med Biotechnol, D-63225 Langen, Germany
[2] PlasmidFactory GmbH & Co KG, D-33607 Bielefeld, Germany
[3] Max Delbruck Ctr Mol Med, D-13125 Berlin, Germany
[4] Charite, Translat Oncol Expt & Clin Res Ctr, D-13125 Berlin, Germany
[5] Max Delbruck Ctr Mol Med, Mobile DNA, Berlin, Germany