Roellecke, K
Virts, E L
Einholz, R
Edson, K Z
Altvater, B
Rossig, C
von Laer, D
Scheckenbach, K
Wagenmann, M
Reinhardt, D
Kramm, C M
Rettie, A E
Wiek, C
Hanenberg, H
Article History
Received: 7 December 2015
Revised: 23 March 2016
Accepted: 5 April 2016
First Online: 19 May 2016
Competing interests
: HH may receive royalties based on a license agreement between Indiana University, Indianapolis, IN, USA, and Takara Shuzo Inc., Kyoto, Japan, on the sales and usage of Retronectin<sup>®</sup> CH296 in transduction protocols. The other authors declare no conflict of interests.