Amphipathic trans-acting phosphorothioate DNA elements mediate the delivery of uncharged nucleic acid sequences in mammalian cells Jain, H. V. ; Verthelyi, D. ; Beaucage, S. L. Abstract Publication: RSC Advances Pub Date: 2015 DOI: 10.1039/C5RA12038A Bibcode: 2015RSCAd...565245J