RETRACTED: Ultrasound enhances in vivo tumor expression of plasmid DNA by PEG-introduced cationized dextran

[3] Hosseinkhani H, Tabata Y In vitro gene expression by cationized derivatives of an artificial protein with repeated RGD sequences, Pronectin®. [http://doi:10.1016/S0168-3659(02)00412-1] Journal of Controlled Release 86 (2003) 169-182