Institution: | 1. Department of Biological Sciences, University of Pittsburgh, 4249 Fifth Avenue, Pittsburgh, PA 15260, USA;2. Department of Chemistry and Center for Nucleic Acids Science & Technology, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA;3. Children''s Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Ottawa, K1H 8L1 ON, Canada |