The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic...http://www.google.com.au/patents/US5846717?utm_source=gb-gplus-sharePatent US5846717 - Detection of nucleic acid sequences by invader-directed cleavage
