A method of selecting nucleic acids on the basis of physical structure is disclosed. A modification of the Systematic Evolution of Ligands by Exponential enrichment (SELEX) is used in conjunction with methods for differentiating between nucleic acid molecules on the basis of physical structure,...http://www.google.de/patents/US5707796?utm_source=gb-gplus-sharePatent US5707796 - Method for selecting nucleic acids on the basis of structure
