The invention relates to a method of generating a signal indicative of the presence of a target nucleic acid in a sample, where the method includes forming a cleavage structure by incubating a sample comprising a target nucleic acid with a probe having a secondary structure that changes upon binding...http://www.google.de/patents/US7361467?utm_source=gb-gplus-sharePatent US7361467 - Methods for detection of a target nucleic acid by capture