%0 Journal Article %T Design and Development of Degradable Polyethylenimines for Delivery of DNA and Small Interfering RNA: An Updated Review %A Chong-Su Cho %J ISRN Materials Science %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/798247 %U http://dx.doi.org/10.5402/2012/798247