Additional file 1.
Figure S2. Alignment of the WPRE element used in the lentiviral pRRL.SIN. vector (, N, upper sequence), and the WPRE* element as used in the SIN11 retroviral vector ( B, lower sequence). Mutations introduced to eliminate the “atg´s“ are boxed. The WPRE*-short fragment (pre*s) used throughout this work is underlined.
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Heinz et al. BMC Biotechnology 2013 13:5 doi:10.1186/1472-6750-13-5