We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleDelivery of unmodified bioactive ribozymes by an RNA-stabilizing polyethylenimine (LMW-PEI) efficiently down-regulates gene expression.AuthorsAigner A; Fischer D; Merdan T; Brus C; Kissel T; Czubayko FPublicationGene therapy, 2002, Vol 9, Issue 24, p1700ISSN0969-7128Publication typearticleDOI10.1038/sj.gt.3301839