A target nucleic acid sequence is amplified by providing a polynucleotide such as VII including the sequence to be amplified as well as an RNA polymerase promoter sequence, and contacting said polynucleotide, in the presence of a system having the RNA polymerase activity, a RNA-dependent DNA...http://www.google.com/patents/US5849547?utm_source=gb-gplus-sharePatent US5849547 - Method for nucleic acid amplification by transcription using displacement, and reagents and kit therefor 
